Miscellaneous MCQ on science for competitive exams
Test series no -3
1- Consider the following statements and choose the correct option/s.
| (a) When an ultrasound travels from one medium to the other medium, its wavelength, frequency and speed changes.
(b) The frequency of an ultrasound wave remains almost unchanged while travelling from one medium to the other medium. (c) The frequency and speed of an ultrasound wave change when travelling from one medium to the other medium. (d) Echocardiography is a technique used in medical diagnostics, employs ultrasound |
(A) Statement (b) and (d)
(B) Statement (a) and (b)
(C) Statement (c) and (d)
(D) Statement (d) and (a)
2- A person is not able to see distant objects clearly. Which of the following statement/s are true?
| (a) The person is suffering from Hypermetropia
(b) The defect may have been caused due to excessive curvature of the eye lens or elongated of the eye ball. (c) The defect may be corrected by using a concave lens of suitable power. (d) The defect can be corrected by using a convex lens of suitable power |
(A) Statement (b) and (c)
(B) Statement (a) and (b)
(C) Statement (c) and (d)
(D) Statement (d) and (b)
3- Match the following cell organelle listed in column A and their function in column B.
| Column A Column B
(a) Golgi body (i) Digestion (b) Smooth endoplasmic reticulum (ii) Formation of liposome (c) Ribosome (iii) Protein synthesis (d) Liposome (iv) Lipid synthesis |
(A) (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
(B) (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
(C) (a)-(iii), (b)-(iv), (c)-(ii) (d)- (i)
(D) None of the above
4- Which of the following group of disease comprises genetic diseases?
(A) AIDS, Hepatitis, Colour blindness
(B) Sickle cell anemia, AIDS, Cancer
(C) Sickle cell anemia, Hemophilia, Down syndrome
(D) All of the above
5- Consider the following statement/s about Yeast is/are correct?
| (a) Yeasts are fungi
(b) Yeast can form Pesudomycelium (c) Yeast Reproduce asexually by budding (d) Yeasts are facultative anaerobes (e) All yeasts are dimorphic (f) All yeasts are pathogenic |
(A) (a), (d), (e), (f)
(B) (c), (d), (e), (f)
(C) (b), (c), (d), (e)
(D) (a), (b), (c), (d)
6- A vitamin that functions both as a hormone and a visual pigment?
(A) Thiamine
(B) Retinal/ Retinol
(C) Folic acid
(D) Riboflavin
7- The total percentage of carbon present in our human body is
(A) 10-18%
(B) 18-19 %
(C) 20-25 %
(D) None of the above
8- During expiration the air will leave the lungs when pressure inside the lungs must becomes
(A) Lower than atmospheric pressure
(B) Equal to atmospheric pressure
(C) Higher than atmospheric pressure
(D) None of the above
9- Which of the following is not a preservative?
(A) Sorbic acid salts
(B) Sodium benzoate
(C) Potassium metabisulphite
(D) Dulcin
10- Which of the following option/s is/are correct in respect of the electric current used in day to day at our home?
| (a) Microwave and television uses dc current
(b) Refrigerator and washing machine uses ac current (c ) Air cooler and air conditioner uses ac current (d) Most of the devices use 220 amphere current (e) Magnitude of current passing through different devices is same |
(A) Only (b) and (c)
(B) Only (a) and (b)
(C) Only (d) and (c)
(D) (a), (b), (c), (d), (e) all are correct
11- Consider the following option and choose the correct one
| (a) The magnetic field lines emerge from the north pole and merge at the south pole of a bar magnet.
(b) The direction of magnetic field is taken to be the direction in which the north pole of a compass needle moves. (c) The relative strength of the magnetic field is shown by the degree of closeness of the field lines. (d) There is no field inside a bar magnet. |
(A) Option (d)
(B) Option (c)
(C) Option (a) and (b)
(D) Option (a), (b), (c)
12- Consider the statements and choose the right option
| (a) An electric motor converts electrical energy into mechanical energy.
(b) Both electric motor and generator works on the same principle. (c) An electric generator converts mechanical energy into electrical energy |
(A) Option (a) (b) and (c)
(B) Option (b) and (c)
(C) Option (a) and (b)
(D) Option (a) and (c)
13- Choose the correct option
| (1) Evaporation is a surface phenomenon which means particles from the surface change into vapour state.
(2) Boiling is a bulk phenomenon, which means particles from the bulk of the liquid change into vapour state. (3) Deposition is the change of gaseous state directly to solid without converting into the liquid state. (4) The state of matter can be changed by changing its temperature |
(A) Option (1), (2), (3)
(B) Option (1) and (2)
(C) Option (3) and (4)
(D) Option (2), (3) and (4)
14- Match the List I with List II
| List I List II
1. Camphor from solid sodium chloride a. Chromatography 2. Different pigments from an extract of flower petals b. Distillation 3. Acetone and water mixture c. Centrifugation 4. Butter from cream d. Sublimation |
(A) 1-a, 2-b, 3-c, 4-d
(B) 1- d, 2-a, c-b, 4-c
(C) 1-c, 2-b c-d 4-a
(D) None of the above
15-Photosynthesis is the process that helps green plants synthesizes their food. A cascade of events and chemical reactions takes place in a specified sequential order. Choose an event that does not take place in photosynthesis.
(A) Splitting of water
(B) Absorption of light energy by chlorophyll
(C) Oxidation of carbon to carbon dioxide
(D) All of the above
16- A couple suspects a mix up of their new born baby in the hospital. Blood typing is sought to resolve the dispute. The man has blood group A and woman has a blood group B. Their biological child can have blood group.
(A) A or B or AB
(B) Either A or B
(C) A or B or O or AB
(D) Only AB
17- Consider the following
| i. Nitrification is the process in which nitrates are converted to nitrogen.
ii. Denitrification is a process in which nitrogen is converted into nitrates. iii. Nucleic acids contains nitrogen iv. Nitrogen Fixing bacteria are present in root legumes. v. During atmospheric lightening nitrogen in the air gets converted into oxides of nitrogen |
.
(A) iii, iv, v options are correct
(B) i, ii, iii options are correct
(C) i , ii, iii, iv, v option are correct
(D) None of the above
18- Choose the correct options about Lichens
| i. Lichens are autotrophs
ii. Lichens are symbolic lifeform iii. Lichens are fungi iv. Lichens are algae |
(A) Option i, ii, iii and iv
(B) Option i, and ii are correct
(C) Option iii, iv are correct
(D) None of the above
19- Following are some processes involving change of state
| a. Evaporation of water
b. Burning of candle c. Dissolution of sugar in water d. Electrolysis of water to form hydrogen and oxygen |
(A) Option a, b, c, d are correct
(B) Only a
(C) Only b
(D) None of the above
20- Consider the following statements and choose which are not correct?
| a. Plaster of Paris is obtained on heating gypsum.
b. Sodium carbonate is an important constituent of baking powder. c. Bleaching powder can also act as an oxidizing agent. d. Sodium hydroxide is produced by passing electricity through the aqueous solution of sodium chloride |
(A) All options are incorrect
(B) Option a
(C) Option c
(D) Option b
21- Select the correct option regarding cleansing action of soaps
(A) The formation of micelles in a soap solution during the cleansing of clothes is called emulsification.
(B) Micelles surround the Ca2+ or Mg2+ ions in hard water instead of oily droplets.
(C) Hydrophilic end of soap molecules interact with the oily droplets.
(D) All of the above are correct
22- Who discovered the Laws of planetary orbits?
(A) Galileo Galilei
(B) Johannes Kepler
(C) Nicholas Copernicus
(D) Issac Newton
23- Selective scattering is caused by
(A) Hygroscopic nuclei
(B) Dust particles
(C) Gases
(D) All of the above
24- The most important component responsible for Albedo is
(A) Dust particles
(B) Ozone layer
(C) Ice cover
(D) Cloud cover
25- Hemoglobin is
(A) The iron containing oxygen transport metalloprotein in the red blood cells of all vertebrates with the exception of the fish family as well as the tissues of some invertebrates.
(B) The iron containing oxygen transport in the blood cells of all vertebrates with the exception of the fish family as well as the tissues of some invertebrates
(C) The iron containing Nitrogen transport metalloprotein in the red blood cells of all vertebrates as well as the tissues of some invertebrates
(D) The iron containing oxygen transport metalloprotein in the red blood cells of all vertebrates as well as the tissues of some invertebrates.
26- Increased concentration of CO2 in atmosphere is responsible for
(A) Green house effect
(B) Acid rain
(C) Death of aquatic life
(D) Lack of photosynthesis
27- The temperature of the system of decreases in an
(A) Adiabatic compression
(B) Adiabatic expansion
(C) Isothermal expansion
(D) Isothermal compression
28- When an electrolyte is added to a colloidal solution it
(A) Gets charged into a sol
(B) Gets ionized
(C) Gets coagulated
(D) None of the above
29- The movement of molecules of a dispersed phase in a zig zag manner is termed as
(A) Tyndall effect
(B) Electrophoresis
(C) Dialysis
(D) Brownian motion
30- Which part of new Encyclopedia Britannica is useful for ready references?
(A) Propaedia
(B) Micropaedia
(C) Premedia
(D) Macropaedia
31- Movement of cell against concentration gradient is called ……………..
(A) Passive transport
(B) Osmosis
(C) Diffusion
(D) Active transport
32- Osmosis is the flow solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
(A) Exact concentration of solution is not given
(B) Character of semi permeable membrane is not given
(C) The flow of solution is not possible through semi permeable membrane
(D) None of the above is correct
33- The absorption of ink by blotting paper involves;
(A) Viscosity of ink
(B) Capillary action phenomenon
(C) Diffusion of ink through the blotting
(D) Siphon action
34- Solar spectrum is an example for
(A) Line emission spectrum
(B) Continuous emission spectrum
(C) Line absorption spectrum
(D) Band absorption spectrum
35- The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon
(A) Frequency
(B) Wavelength
(C) Intensity
(D) Work
36- Electromagnetic wave consist of periodically oscillating electric and magnetic vectors
(A) In manually perpendicular planes but vibrating in phase
(B) In randomly oriented planes but vibrating in planes
(C) In mutually perpendicular planes but vibrating with a phase difference of π
(D) None of the above
37- LPG is mainly a mixture of
(A) Propane and Butane
(B) Propane and Isobutene
(C) Propane and Tetralin
(D) All of the above
38- Which is the most common isotope of uranium found in nature?
(A) Uranium 235
(B) Uranium 238
(C) Carbon 14
(D) Radium 87
39- Bio-fertilizer is a/an
(A) Green manure
(B) Organic manures
(C) Culture of micro organism
(D) All of the above
40- Living cells are not essential for
(A) Guttation
(B) Transpiration
(C) Both A and B
(D) Evaporation
41- The major fungi that effects food grains in storage are
(A) Rhizopus
(B) Aspergillus
(C) Mucor
(D) All of the above
42- Mastitis in animals is due to
(A) Virus and worm
(B) Bacteria and virus
(C) Worm
(D) Fungi and dry hand milking
43- The Biological Diversity Act 2002 was born out of India’s attempt to realize the objectives of enshrine in the
(A) United Nations Convention on Biological Diversity (CBD) 1990
(B) United Nations Convention on Biological Diversity (CBD) 1991
(C) United Nations Convention on Biological Diversity (CBD) 1992
(D) United Nations Convention on Biological Diversity (CBD) 1993
44- What kind of micro-organisms is there in nitrogen fixing bacteria?
(A) Azotobacter
(B) Rihzobium
(C) Procaryotic
(D) None of the above
45- The biologist who discovered the scientific function of cells in 1665 was
(A) Robert Hook
(B) Andreas Vesalius
(C) John Hunter
(D) William Harvey
46- Paleontology is the study of
(A) Volcanoes
(B) Plant and animal fossils
(C) Rocks
(D) Atmosphere
47- Match the names of the branches of the biological studies in column I with column II with specialization area
| Column I Column II
1. Acarology a. Study of Fish 2. Cetology b. Study of Agriculture 3. Geoponics c. Study of Mites 4. Ichthyology d. Study of Whales and Dolphines |
(A) 1-a 2-b 3-c 4-d
(B) 1-c 2-d 3-b 4-a
(C) 1-d 2-a 3-b 4-c
(D) None of the above
48- Match the following
| List I List II
(Scientific instrument) (Field of application) 1. Galvanometer a. Measure internal pressure of the eye 2. Hygrometer b. Measure electric currents 3. Manometer c. Measure humidity levels 4. Tonometer d. Pressure of gases |
(A) 1-a 2-b 3-c 4-d
(B) 1-c 2-d 3-a 4-b
(C) 1-d 2-a 3-b 4-c
(D) 1-b 2- c 3-d 4-a
49- Pigment containing and light reflecting cells are
(A) Chloroplasts
(B) Leucoplasts
(C) Chromatography
(D) Chromatoplasts
50- Match the following
| List I List II
(Branches of Chemistry) (Study and research) 1. Biochemistry a. Physical principles of chemical processes 2. Material Chemistry b. Detection and determination of chemicals and compo 3. Physical Chemistry c. Chemical processes in living organism 4. Analytical Chemical d. Solid state chemistry and polymer chemistry |
(A) 1-c 2-d 3-a 4-b
(B) 1-a 2-b 3-c 4-d
(C) 1-d 2-c 3-b 4-a
(D) None of the above
51-The amount of heat required for a substance to change from one state to another without change in temperature is called…………….
(A) Latent heat
(B) Radiation
(C) Specific heat
(D) Convection
52- Match the list I with List II
| List I-Scientist List II – Their fundamentals
1. Louis Pasteur a. splitting of the atom and discovery of portion 2. Alexander Fleming b. discovery of X-Rays 3. Ernest Rutherford c. enzyme Iysozyme and Benzyl penicillin 4. William Konrad Roentgen d. vaccination and microbial fermentation |
(A) 1-c 2-d 3-a 4-b
(B) 1-a 2-b 3-c 4-d
(C) 1-b 2-c 3-a 4-d
(D) 1-d 2-c 3-b 4-a
53- Match the following
| Column I – name of fuel Column II-chemical properties
1. Water Gas a. Methane 2. Natural Gas b. Butane and Propane 3. CNG c. Methane, Ethane 4. LPG d. Carbon Monoxide and Hydrogen |
(A) 1-c 2-d 3-a 4-b
(B) 1-a 2-b 3-c 4-d
(C) 1-b 2-c 3-a 4-d
(D) 1-d 2-c 3-a 4-b
54-A high molecular weight compound formed by combining large numbers of small molecules of low molecular weight is called
(A) Acid
(B) Alkali
(C) Polymer
(D) Direct dyes
55- The Nobel Prize for physics in 2018 was awarded for pioneering work in which field?
(A) Thermodynamics
(B) Aerodynamics
(C) Quantum Theory
(D) Laser Physics
56- Emetophobia is the fear of
(A) Heights
(B) Vomiting
(C) Death
(D) Tunnels
57- When the nucleus of uranium is bombarded with neutrons, it breaks up into two of nearly equal mass. This process is called
(A) Fusion
(B) Fission
(C) Emission
(D) None of the above
58- In tragedies caused by drinking spurious liquor, the active agent causing such tragedies is
(A) Methyl alcohol
(B) Amyl alcohol
(C) Ethyl alcohol
(D) None of the above
59- A vector is a physical quantity which was
(A) Density and tension
(B) Inertia and stress
(C) Mass and volume
(D) Magnitude and direction
60- Which of the following groups of organic compounds are least likely to be used in making of perfumes?
(A) Carboxylic Acids
(B) Alcohols
(C) Esters
(D) Aldehydes
61- Which acid is used for cleansing gold ornaments?
(A) Uric acid
(B) Boric acid
(C) Sulphuric acid
(D) Nitric acid
62- Which of the following does not involve Total Internal Reflection?
(A) Optical fiber
(B) Diamond sparkle
(C) Mirage in deserts
(D) Kaleidoscope
63- This compound is conventionally used for white washing of building?
(A) It is produced when calcium carbide reacts with water.
(B) It is obtained by treating quick lime with water.
(C) It is one of the raw material used for the manufacture of Portland cement.
(D) None of the above
64- The substance with pH less than 7 are
| 1. Gastric juices
2. Coffee 3. Apple juice 4. Liquid in car batteries |
(A) None of the above
(B) All of the above
(C) Option 1 and 2
(D) Option 1,3, and 4
65- The best electrical conductor among the following is
(A) Aluminium
(B) Copper
(C) Silver
(D) Gold
66- Consider the statements which are true about washing soda?
| 1. Its chemical name is sodium hydrogen carbonate.
2. Its chemical name is sodium carbonate and the pH of its aqueous solution is more than 7 3. It is used for removal of permanent hardness of water 4. It is used for cakes while baking. |
(A) All options are correct
(B) Option 1 and 2
(C) Option 2 and 3
(D) None of the above is correct
67- Consider the diseases and their symptoms and choose the correct option.
| Column I Column II
1. Typhoid a. Persistence cough, low grade fever and loss of weight. 2. Cholera b. High fever, stomach pain and skin rash 3. Tuberculosis c. Fever, loss of appetite and red spots 4. Chicken pox d. Rice water stools nausea and vomiting |
(A) 1-b 2-d 3-a 4-c
(B) 1-a 2-b 3-c 4-d
(C) 1-d 2-c 3-b 4-a
(D) None of the above
68-The depth of a sea can be determined by using SONAR. Consider the correct statement about it.
| 1. It uses Ultrasonic waves for measurement of depth of a sea
2. Time taken by the Ultrasonic waves reflected from the bottom of the sea to reach the detector is used to measure the depth. |
(A) Only 1 option is correct
(B) Both 1 and 2 are correct
(C) Only 2 options is correct
(D) None of the above option is correct
69- Doctors recommended Real Time PCR test for COVID 19 patients. This diagnostic test detects
(A) Protein of virus
(B) Complete COVID virus
(C) RNA and virus
(D) None of the above
70- A patient suffering from stomach pain and indigestion was advised by the doctor to take probiotics. The probiotics help to
(A) Decrease the acid secretion
(B) Kill harmful bacteria in the stomach
(C) Increase the effects of medication
(D) Provide the beneficial bacteria for healthy digestion
71-Plastic Bags are potential hazard to the environment. Which of the following are correctly matched with the statement/s?
| 1. They are light in weight and cause nuisance by flying
2. Toxic chemicals are used in their production 3. They are non-biodegradable |
(A) Option 3 is correct
(B) Option 1 and 2
(C) Option 1 is correct
(D) All of the above are correct
72- Which of the following statements is/are correct about Apical Meristem?
| a. It is present at the growing tips of stems and roots and increases the length of the stem and the root.
b. Due to this the girth of the stem or root increases. c. It is seen in some plants and located near the node. |
(A) Only a and b are correct
(B) Only a option is correct
(C) Only c option is correct
(D) All options are correct
73- What prevents backflow of blood inside the heart during contraction?
(A) Liver
(B) Thick muscular walls of ventricles
(C) Valves in heart
(D) Walls of intestine
74- Glucose is a type of what type of molecule?
(A) Nuclei acid
(B) Protein
(C) Fat
(D) Carbohydrate
75- The green colour seen in fireworks displays is due to the chloride salt of
(A) Calcium
(B) Stronium
(C) Sodium
(D) Barium
76- When a light rays passes from glass to water the speed of light ……….
(A) Increases
(B) Decreases
(C) Remain same
(D) First decrease then icrease
77- During Solar eclipse
(A) The sun comes in between moon and earth
(B) The moon comes in between sun and earth
(C) The moon makes an angle of 90degree with earth
(D) None of the above
78-Which one of the following gases is found in highest quantity in exosphere?
(A) Oxygen
(B) Helium
(C) Hydrogen
(D) All of the above
79-The rate of evaporation of liquid does not depend upon
(A) Its surface area exposed to the atmosphere
(B) Humidity
(C) Temperature
(D) Mass
80- Which telescope captured the M87 black hole with its magnetic fields?
(A) Event Horizon Telescope
(B) Giant Magellan Telescope
(C) Hubble Telescope
(D) 30 Meter Telescope
81- Ultra purification of a metal is done by
(A) Melting
(B) Smelting
(C) Leaching
(D) Zone melting
82- People prefer to wear cotton clothes in summer season. This is due to the fact that cotton clothes are
(A) Good Conveyor of heat
(B) Good radiator of heat
(C) Good absorbers of water
(D) All of the above
83- Burns caused by steam are much more severe than those caused by boiling water because
(A) Temperature of steam is higher
(B) Steam has latent heat
(C) Steam engulfs the body quickly
(D) None of the above
84- Cinnabar is an ore of
(A) Mercury
(B) Calcium
(C) Zinc
(D) All of the above
85- Which one is a sublime substance?
(A) Camphor
(B) Dry Ice
(C) Iodine
(D) All of the above
86- One micron represent a length of
(A) 10-6 m
(B) 10 -4 m
(C) 10-2 m
(D) 1 m
87- What are the most abundant components of salts in sea?
(A) Chlorine and Sodium
(B) Calcium and Sodium
(C) Sodium and Magnesium
(D) All of the above
88- Which of the following is not igneous rock?
(A) Granite
(B) Conglomerate
(C) Basalt
(D) Radium
89- Bats can fly in dark because they
(A) Have strong wings
(B) Have sharp eyes
(C) Produce Ultrasonic waves
(D) Are nocturnal
90- Lysosome arises from
(A) Hydrolytic enzymes
(B) Intracellular digestion
(C) Bound cell
(D) The Golgi apparatus
91- The sex of a new born baby is determined by the chromosome inherited from
(A) The mother
(B) The father
(C) The mother’s mother
(D) The mother’s father
92-Full form of AIDS
(A) Acquired Infection Deficiency syndrome
(B) Acquired Immune Deficiency Syndrome
(C) Active Immune Deficiency Syndrome
(D) None of the above
93- Gobar gas mainly contains
(A) Ethane
(B) Propane
(C) Methane
(D) All of the above
94- Nitrogen present in the atmosphere is utilized by
(A) No use for plant
(B) Plants direct
(C) Microorganisms
(D) Injurious for plants
95- What type of fire extinguisher is used for petroleum fire?
(A) Foam
(B) Powder
(C) Soda acid
(D) Water
96- Rocket works on the principle of the conservation of
(A) Speed momentum
(B) Linear momentum
(C) Light momentum
(D) Fuel momentum
97- Nuclear explosive devices were tested in India at
(A) Bangalore
(B) Pokharan
(C) Karnataka
(D) Sriharikota
98- Otto Hahn is famous for
(A) Microphone
(B) Television
(C) X-rays
(D) Atom bomb
99- Petroleum consist of
(A) Diesel
(B) Bitumen
(C) Petroleum gas
(D) All of the above
100-Percentage of lead in lead pencils is
(A) 0%
(B) 5%
(C) 10%
(D) 15%
Answer Key for Test series no. 3
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