Miscellaneous MCQ on science for competitive exams
Test Series no 1
1- An emulsion is a colloid of a
(A) liquid in a liquid
(B) gas in a liquid
(C) liquid in a gas
(D) gas in a solid
2- Percentage of carbon in steel ranges from
(A) 0.1 to 1.5
(B) 1.5 to 3.0
(C) 3.0 to 4.0
(D) 4.0 to 6.0
3- Which of the following is not present in German silver?
(A) Copper
(B) Silver
(C) Nickel
(D) Zinc
4- Which is the anti coagulant substance in blood?
(A) Thrombin
(B) Fibrinogen
(C) Heparin
(D) Globin
5- The major harmful gas emitted by automobile vehicles which causes air pollution is ………………
(A) Carbon dioxide
(B) Ozone gas
(C) Methane
(D) Carbon monoxide
6-Jaundice is a symptom of disease of
(A) Kidney
(B) Liver
(C) Pancreas
(D) Thyroid
7- The vaccination against small pox involves the introduction of
(A) killed germs
(B) weakened germs
(C) live antibodies
(D) activated germs
8- Deficiency of vitamin B6 in man causes
(A) Beriberi
(B) Scurvy
(C) Anaemia
(D) Rickets
9- First successful heart transplantation was done by
(A) P. K Sen
(B) D. S Patel
(C) D. Shetty
(D) C. N. Barnard
10- Yellow fever is transmitted by
(A) Aedes
(B) Anopheles
(C)House fly
(D) Culex
11- Major Green House gas is
(A) Freon
(B) Carbon monoxide
(C) Chloro flurocarbon
(D) Carbon dioxide
12- Washing of peeled vegetables removes the vitamin
(A) E
(B) D
(C) A
(D) C
13- Pasteurization is the process in which milk is heated to
(A) 63o C for 30 minutes
(B) 60o C for 20 minutes
(C) 72o C for 10 minutes
(D) none of the above
14- Match the list 1 with list 2
| Discoverer Discoveries
a. Jenner 1. blood grouping b. Watson 2. penicillin c. Landsteiner 3. vaccination d. Flemming 4. double helix |
(A) a-1, b-2, c-3, d-4
(B) a-3, b-4, c-1, d-2
(C) a-4, b-3, c-2, d-1
(D) a-2, b-1, c-3, d-4
15- Which of the following is most elastic?
(A) Steel
(B) Wet clay
(C) Rubber
(D) None of the above
16- A man with colour blindness will see red as
(A) Blue
(B) Yellow
(C) Green
(D) Violet
17- When a person walking in bright sunlight enters a dark room he is not able to see clearly for a little while because
(A) The retina retains the bright images for sometime and becomes momentarily insensitive.
(B) The eye muscles cannot immediately adjust the focal length of the aye lenses.
(C) The iris is unable to contract the pupils immediately.
(D) The iris is unable to dilate the pupil immediately.
18- The swing of a spinning cricket ball in the air can be explained on the basis of
(A) Buoyancy of air
(B) Turbulence caused by wind
(C) Bernoulli’s theorem
(D) Sudden change in wind direction
19- The Freezer in a refrigerator is fitted near the top
(A) to keep it away from hot compressor which is nearer to the bottom
(B) because of convenience
(C) it facilitates convection currents
(D) none of the above
20- The chemical name of common salt is
(A) Calcium Chloride
(B) Ammonium chloride
(C) Sodium nitrate
(D) Sodium chloride
21- Denatured spirit is ethanol mixed with
(A) Pyridine
(B) Petrol
(C) Kerosene
(D) Water
22- The metal which is constituent of vitamin B12 is
(A) Magnesium
(B) Cobalt
(C) Zinc
(D) Iron
23- The most abundant inert gas in the atmosphere is
(A) Neon
(B) Helium
(C) Argon
(D) Zinc
24- Which metal is extracted from Sea water?
(A) Aluminium
(B) Beryllium
(C) Potassium
(D) Magnesium
25- Percentage of lead in lead pencils is
(A) 2
(B) 10
(C) 40
(D) 0
26-The scientist associated with the success of Green Revolution is
(A) Norman Borlaug
(B) J. C. Bose
(C) V. R. Rao
(D) S. R. Bhattnagar
27- Electron was discovered by
(A) Rutherford
(B) J. J. Thomson
(C) Bohr
(D) Ramsay
28- The first heart transplantation was performed in
(A) Canada
(B) South Africa
(C) U.S.A
(D) U. K
29- Which of the following gases is produced during lightning?
(A) Nitrogen
(B) Nitric Oxide
(C) Nitrogen oxide
(D) Nitrous oxide
30- Which of the following diseases usually spread through milk?
(A) Typhoid
(B) Plague
(C) Diphtheria
(D) Malaria
31- The ratio of pure gold in 18 carat gold is ……..
(A) 60%
(B) 80%
(C) 90%
(D) 75%
32- The human cell contains
(A) 23 chromosomes
(B) 44 chromosomes
(C) 46 chromosomes
(D) none of the above
33-In human body, which structure is the appendix attached to
(A) The small intestine
(B) The large intestine
(C) The gall bladder
(D) The stomach
34- Which one of the following is called Philosopher’s wool?
(A) Zinc Oxide
(B) Zinc Nitrate
(C) Zinc Chloride
(D) None of the above
35- Another name for RDX is …………………….
(A) Dextrin
(B) Cyanohydrins
(C) Cyclonite
(D) Cyclohexane
36- Which f the following is non-metal is not a poor conductor of electricity?
(A) Selenium
(B) Sulphur
(C) Bromine
(D) Phosphorus
37- Which one of the following type of glass can cut off ultraviolet rays?
(A) Crookes glass
(B) Pyrex glass
(C) Jena glass
(D) Soda glass
38- Robert Webster is known for his work associated with which one of the following?
(A) Cardiology
(B) Influenza virus
(C) HIV/AIDS
(D) Alzheimer
39- Which one of the following types is used by computed tomography employed for visualization of the internal structure of human body?
(A) Magnetic resonance
(B) Sound waves
(C) X-rays
(D) All of the above
40- In our body which one of the following hormones regulates blood calcium and phosphate?
(A) Growth hormone
(B) Thyroxin
(C) Glucagon
(D) Parathyroid hormone
41- How do most insects respire?
(A) Through skin
(B) By Tracheal system
(C) Through gills
(D) None of the above
42- In human beings , in which one of the following parts does the sperm fertilize the ovum?
(A) Cervix
(B) Fallopian tube
(C) Lower part of uterus
(D) Upper part of uterus
43- Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Pons
44- Production of which one of the following is a function of liver?
(A) Urea
(B) Lipase
(C) Mucus
(D) Hydrochloric acids
45- Which one of the following is a digestive enzyme in the human system?
(A) Gastrin
(B) Trypsin
(C) Ptyalin
(D) Pepsin
46- Which one of the following types of light are strongly absorbed by plants?
(A) Violent and orange
(B) Blue and red
(C) Indigo and yellow
(D) Yellow and violet
47- ‘HAEMOPHILLIA’ is the disease of
(A) Liver
(B) Blood
(C) Brain
(D) Bones
48- Which one of the following is present in Tobacco?
(A) Cocaine
(B) Marijuana
(C) Heroin
(D) Nicotine
49- Yellow lamps used as street light. Which one of the following is use in these lamps?
(A) Neon
(B) Hydrogen
(C) Sodium
(D) Nitrogen
50- The deficiency of which of the following vitamins considered responsible for night blindness?
(A) A
(B) B
(C) K
(D) E
51- Which one of the following diseases is caused by the deficiency of Iron in human body?
(A) Anaemia
(B) Scurvy
(C) Dermatitis
(D) Beriberi
52- Wool is a …………fibre.
(A) animal
(B) Polyester
(C) Cotton
(D) Vegetables
53- The minimum temperature at which a combustible substance catches fire is called ……………..
(A) Fireless temperature
(B) Ignition temperature
(C) Optimum temperature
(D) Static temperature
54- Centre for DNA Fingerprinting is located at
(A) Pune
(B) Chennai
(C) Hyderabad
(D) Bangalore
55- Cryogenic engines are used in
(A) Doing research connected with superconductivity
(B) Refrigerators
(C) Atomic reactor
(D) Rockets
56- Threat of global warming is increasing due to increasing concentration of
(A) Nitrogen
(B) Carbon dioxide
(C) Sulphur dioxide
(D) Ozone
57- Nuclear reactors used to produce electricity are based on
(A) Nuclear fusion
(B) Nuclear fission
(C) Cold fusion
(D) Superconductivity
58- Workers of paint industries are exposed to which one of the following hazards?
(A) Cadmium pollution
(B) Nickel pollution
(C) Lead pollution
(D) None of the above
59- Which one of the following is responsible for blue baby syndrome?
(A) Arsenic
(B) Lead
(C) Fluoride
(D) Nitrate
60- Vaccination is available against which of the following disease except
(A) Malaria
(B) Hepatitis B
(C) Typhoid fever
(D) Yellow fever
61- Athlete with higher proportion of red fibers in their muscles are better equipped for which one of the following?
(A) Shot put
(B) Short activities
(C) Sprint
(D) Swimming
62- Match the list I with list II
| List I List II
a. Vitamin A 1. Essential for formation of collagen b. Vitamin C 2. Assists in absorption and metabolism of Calcium c. Vitamin D 3. Essential for healthy skin and normal vision d. Vitamin D 4. Essential for Re blood cell formation |
(A) a-1, b-2, c-3, d-4,
(B) a-2, b-3, c-4, d-1,
(C) a-4, b-3, c-2, d-1,
(D) a-3, b-1, c-2, d-4,
63-Which one of the following types of cells has the ability to develop into any type of cell?
(A) Stem cell
(B) Endodermal cell
(C) Ectodermal cell
(D) Muscle cell
64- Which one of the following is an abnormal constituent of urine?
(A) Urea
(B) Ketone bodies
(C) Uric acid
(D) Creatinine
65- Which of the following cell produces antibodies?
(A) Eosinophil
(B) Monocyte
(C) Lymphocytes
(D) None of the above
66- The vitamin that helps in clotting of blood is
(A) E
(B) A
(C) K
(D) C
67- At a very high altitude, the Red Blood Corpuscles in the body will
(A) Increase in number
(B) Decrease in size
(C) Increase in size
(D) None of the above
68- A test tube baby means
(A) A baby grown in a test tube.
(B) Fertilization in vitro and then transplantation in the uterus.
(C) Embryo fertilized in uterus and developed in the test tube.
(D) Embryo fertilized and developed in uterus.
69- The speed of the light with the rise in the temperature of the medium
(A) Increases
(B) Decreases
(C) Remains unaltered
(D) Drops suddenly
70- Cloth keeps us warm in winter because they …………………….
(A) Prevent air from contacting the body
(B) Do not radiate heat
(C) Supply heat
(D) Prevent the heat of the body from escaping
71- In refrigerator, what produces the cooling ……………….
(A) The evaporation of a volatile liquid
(B) The ice which deposits on the freezer
(C) The sudden expansion of a compressed gas
(D) None of the above
72- Why we are able to hear short wave broadcasts well than long wave broadcast?
(A) Short waves are more energetic than long waves.
(B) By convention, short wave is meant for long distances, whereas long waves are reserved for short distances.
(C) Short waves broadcasts are made by nearby radio stations.
(D) None of the above
73- Quartz is made up of
(A) Calcium silicate
(B) Calcium sulphate
(C) Silicon dioxide (SiO2)
(D) None of the above
74- Albert Einstein was a
(A) Biologist
(B) Physiologist
(C) Physician
(D) Physicist
75- Which of the following parts of plant is used to produce opium?
(A) Flower
(B) Leaf
(C) Root
(D) Stem
76- From which of the following sources does an athlete get instant energy?
(A) Carbohydrates
(B) Fat
(C) Protein
(D) Vitamin
77- If there is no atmosphere what would be the colour of the Earth?
(A) Red
(B) Black
(C) Blue
(D) White
78- DNA is related to ……………
(A) RBC
(B) WBC
(C) RNA
(D) None of the above
79- The spherical shape of water drops can be attributed to
(A) Viscosity
(B) Buoyancy
(C) Stoke’s Law
(D) Surface tension
80- Cardiovascular disorders are caused by …………..
(A) Cholesterol
(B) Fat
(C) Carbohydrates
(D) Salt
81- ELISA is a test of which disease?
(A) Tuberculosis
(B) Cancer
(C) Polio virus
(D) AIDS
82- What makes the blood look red?
(A) WBC
(B) Plasma
(C) Haemoglobin
(D) RBC
83- Which of the following metal is used for the manufacturing of heating elements provided in electric iron?
(A) Chromium
(B) Nickel
(C) Silicon
(D) Tungsten
84- An electron microscope gives higher magnification than an optical microscope because
(A) The wavelength of electron is smaller as compared to the wavelength of visible light
(B) It uses more powerful lenses
(C) The velocity of electron is smaller than visible light
(D) None of the above
85-The hydraulic brakes used in automobiles is a direct application of
(A) Archimedes law
(B) Pascal’s law
(C) Torricelli law
(D) All of the above
86- Who discovered the Cholera bacillus?
(A) Robert Koch
(B) Louis Pasteur
(C) Joseph Lister
(D) None of the above
87- The metallic constituents of hard water are
(A) Magnesium, Calcium and Tin
(B) Iron, Tin and Copper
(C) Copper, Magnesium and Tin
(D) All of the above
88- Which of the following animals has the longest life span?
(A) Elephant
(B) Tortoise
(C) Dog
(D) Cat
89- Which animal produce biggest baby?
(A) Elephant
(B) Lion
(C) Blue Whale
(D) None of the above
90- Heart attack occurs due
(A) Stopping of heart beat
(B) Fungal infection in heart
(C) Bacteria attack on heart
(D) Insufficient supply of blood to the heart itself
91- The PH value of human blood is between
(A) 6-7
(B) 7.5-8
(C) 5
(D) 8-9
92- A person has blue eyes, black eyes or brown eyes depending on the particular pigment present in
(A) Pupil
(B) Iris
(C) Cornea
(D) None of the above
93- The deficiency of iron in man may results in
(A) Goitre
(B) Night blindness
(C) Anaemia
(D) Vomiting
94- Non-stick kitchenware are coated with
(A) Graphite
(B) Silicon
(C) Teflon
(D) Steel
95- Magnetism in materials is due to
(A) Circular motion of electrons
(B) Electrons at rest
(C) All neutrons at rest
(D) None of the above
96- Short sight in human eye can be corrected by using proper
(A) Convex lens
(B) Concave lens
(C) Bifocal lens
(D) All of the above
97- What is the reason for twinkling of stars?
(A) Dispersion of light
(B) Atmosphere refraction
(C) Atmospheric reflection
(D) All of the above
98- Respiration is
(A) Reduction
(B) Photosynthesis
(C) Hydrolysis
(D) Oxidation
99- Impure camphor is purified by
(A) Oxidation
(B) Steam distillation
(C) Sublimation
(D) None of the above
100- During photosynthesis, green plants absorbs
(A) Carbon dioxide
(B) Nitrogen
(C) Oxygen
(D) All of the above
Check answer key on next page