Miscellaneous MCQ on science for competitive exams
TEST SERIES NO – 2
1-Hydrogen spectrum was first explained by
(A) Niels Bohr
(B) Erwin Schrodinger
(C) Dalton
(D) None of the above
2- Which of the following produces more severe burns?
(A) steam
(B) boiling water
(C) hot water
(D) melting ice berg
3- The sudden fall of atmosphere pressure indicates.
(A) rain
(B) storm
(C) cold weather
(D) all of the above
4- Scurvy is a disease which is caused due to the deficiency of vitamin
(A) D
(B) K
(C) C
(D) A
5- The concept of ‘survival of the fittest’ was first discovered by
(A) Dalton
(B) Einstein
(C) Spencer
(D) Darwin
6- In man, the normal number of chromosomes is
(A) 23
(B) 46
(C) 48
(D) 50
7- Deficiency of vitamin D in children causes
(A) beriberi
(B) rickets
(C) scurvy
(D) goiter
8- The seeds of certain plants fail to germinate if they do not pass through the digestive tract of fruit eating birds. This is due to
(A) infertility
(B) hibernation
(C) seed coat impermeability
(D) all of the above
9- Sucrose content in sugarcane decreases
(A) if there is fluctuation in temperature
(B) if there is high temperature during the time of ripening
(C) if frost occurs during the period of ripening
(D) if high rainfall occurs during the period of growth of the plant
10- Blue Revolution is related to
(A) fish production
(B) milk production
(C) oil production
(D) none of the above
11- Who invented optical fiber?
(A) Dalton
(B) Percy L. Spencer
(C) Samuel Cohen
(D) Narinder Kapany
12- Green Revolution in India has so far been most successful in case of
(A) oil
(B) millets
(C) rice
(D) wheat
13- Tamiflu is a frontline drug against
(A) Birdflu
(B) AIDS Cancer
(C) Polio
(D) Pellagra
14- Why excessive heating and repeated use of cooking oil are most undesirable?
(A) loss and wastage of oil
(B) nutrient value of food is lost
(C) both A and B
(D) none of the above
15- Greenhouse effect is caused by
(A) nitrogen
(B) carbon monoxide
(C) carbon dioxide
(D) none of the above
16- Type metal used in printing press is an alloy of
(A) lead and silicon
(B) lead and copper
(C) lead and antimony
(D) all of the above
17- Sour taste of Coca cola is due to the presence of
(A) acetic acid
(B) phosphoric acid
(C) formic acid
(D) all of the above
18- Lac which is used as sealing wax is produced by
(A) mammals
(B) insects
(C) steam
(D) lac soil
19- Cancer is a disease where we find uncontrolled
(A) cell inflammation
(B) cell swelling
(C) cell division
(D) all of the above
20- Jonas Salk invented the vaccine for
(A) Cholera
(B) Typhoid
(C) Cancer
(D) Polio
21- A geyser is a spring which
(A) throws water and steam at regular intervals
(B) throws water continuously
(C) throws only steam
(D) none of the above
22- Hydrogen is not found in atmosphere because
(A) it is lighter gas
(B) it immediately combines with oxygen to form water
(C) it is highly inflammable
(D) none of the above
23- Who discovered the atom bomb?
(A) Albert Einstein
(B) Madam Curie
(C) Otto Hahn
(D) None of the above
24- Which of the following organic compounds has fruity smell?
(A) colour
(B) ether
(C) alcohol
(D) ester
25- Remote sensing device has an inbuilt source of
(A) X-rays
(B) U V rays
(C) Gamma rays
(D) Infrared rays
26- What material is used to make electric heater coil?
(A) nichrome
(B) iron
(C) silicon
(D) sopper
27- The gas used for filling weather balloons is
(A) helium
(B) hydrogen
(C) air
(D) All of the above
28- Petroleum is a mixture of
(A) salts
(B) polymers
(C) hydrocarbon
(D) none of the above
29- Olive Ridley is a famous
(A) Another name of olive tree
(B) Grasshopper
(C) Cricketer
(D) Turtle species
30- The standard audible capacity of healthy human being as per WHO range
(A) 20Hz to 20,000Hz
(B) 200Hz to 250Hz
(C) 2000Hz to 2500Hz
(D) None of the above
31- If there is no carbon dioxide in the earth’s atmosphere, then the temperature of the earth’s surface would be
(A) Dependent on the oxygen of the atmosphere
(B) No change will take place
(C) Lower than the present
(D) Higher than the present
32- The sphere of living matter together with water, air and soil on the surface of the earth is known as
(A) Hydrosphere
(B) Lithosphere
(C) Biosphere
(D) Atmosphere
33- The chief function of stilt root is to provide
(A) Aeration
(B) Support
(C) Nutrition
(D) Food storage
34- The main cause of global climatic change
(A) Increase in the content of carbon dioxide in the atmosphere
(B) Adding of dust
(C) Emission of gases
(D) Changes in plants
35- Which part of the brain controls respiration?
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Cortex
36- At what temperature do the Celsius and Fahrenheit scales show the same reading?
(A) -40o
(B) 0o
(C) -20o
(D) -30o
37- What is the chemical name of Laughing Gas?
(A) Calcium sulphate
(B) Silver nitrate
(C) Sodium carbonate
(D) Nitrous oxide
38- Which virus from the following combination is contagious from human being?
(A) H1N1
(B) H5N1
(C) H2N1
(D) All of the above
39-In mirrors the back surface is coated with a thin layer of
(A) Copper
(B) Mercury
(C) Silver
(D) Silver nitrate
40- When quick lime is added to water
(A) Temperature increases
(B) Temperature decreases
(C) Heat is absorbed
(D) Heat is liberated
41- What is the most common salt water in the sea water?
(A) Calcium carbonate
(B) Potassium Chloride
(C) Sodium
(D) Magnesium
42- The number of neutrons presents in an element having mass number 226 and atom number 88 is
(A) 28
(B) 38
(C) 314
(D) 57
43- A bomb at a rest explodes into a large number of tiny fragments. The total momentum of all the fragments is
(A) Depends on the speed
(B) Depends on total mass
(C) Zero
(D) Is infinity
44- Opium is a plant product obtained from
(A) Roots
(B) Dried buds
(C) Dried latex
(D) Stem bark
45- The antibiotic Ampicillin is a
(A) Semi synthetic drug
(B) Obtained from bacteria
(C) Obtained from fungi
(D) Obtained from plant extract
46- Hypoglycemia refers to
(A) High sugar level in blood
(B) Low sugar level in blood
(C) High blood pressure
(D) None of the above
47- Speed of sound in air is unaffected by change in
(A) Pressure
(B) Volume
(C) Temperature
(D) Humidity
48- Which of the following animals may suffer from foot and mouth disease?
(A) Pigs
(B) Cattle and pigs
(C) Cattle
(D) Cattle, sheep and pig s
49-The primary source of carbohydrates is
(A) Marine animals
(B) Animals
(C) Plants
(D) Mammals
50- Baking soda is
(A) Sodium bicarbonate
(B) Potassium carbonate
(C) Sodium hydroxide
(D) Sodium carbonate
51- Which is not included in the milk teeth in a child age group of 3-4 years?
(A) Molars
(B) Incisors
(C) Canines
(D) Premolars
52- The metal chiefly used for galvanizing iron is
(A) Zinc
(B) Cadmium
(C) Mercury
(D) Tin
53- A single fixed pulley is used to draw water from a well because
(A) Efficiency is 100%
(B) Force is applied in a convenient direction
(C) Velocity ratio is low
(D) Force is applied in upper direction
54- The device which is used to limit the current in an electrical circuit is called
(A) Hub
(B) Grid
(C) Fuse
(D) None of the above
55- The wire of flash bulb is made of
(A) Silver
(B) Barium
(C) Copper
(D) Magnesium
56- A light year is a measure of
(A) Speed
(B) Distance
(C) Velocity Time
(D) All of the above
57- Hypermetropia or long sight can be corrected by using………………………
(A) Concave lenses
(B) Convex lenses
(C) Bifocal lenses
(D) All of the above
58- Stars appear twinkling because of ……………..of light.
(A) Emission
(B) Reflection
(C) Scattering
(D) None of the above
59- Muscle fatigue is caused by the accumulation of
(A) Gastro acid
(B) Uric acid
(C) Acetic acid
(D) Lactic acid
60- Insufficient dietary iodine can cause
(A) Enlarged thyroid
(B) Small thyroid
(C) Giant build
(D) None of the above
61- The colour discharge tubes for advertisement mainly contain
(A) Oxygen
(B) Argon
(C) Helium
(D) Neon
62- What is ‘ALZHEIMER’S ‘diseases?
(A) It affects immune system
(B) It affects Kidney
(C) Disorder of bone
(D) Disorder of brain
63- The function of Trypsin is to
(A) It break down proteins
(B) It breakdown carbohydrates
(C) It breakdown fats
(D) It synthesis protein
64- Root nodules are commonly found in
(A) Parasitic plants
(B) Leguminous plants
(C) Aquatic plants
(D) None of the above
65- The metal extracted from bauxite is
(A) Iron
(B) Copper
(C) Aluminium
(D) Silver
66- When a child is born, what happens to its blood circulation?
(A) Its blood reverses its flow through the heart
(B) Its blood flows for the first time
(C) Its blood carries waste for the first time
(D) None of the above
67- Solder metal is an alloy of
(A) Lead and tin
(B) Lead and antimony
(C) Copper and zinc
(D) None of the above
68- In a nuclear reactor the material used for absorbing neutron is
(A) Copper
(B) Cadmium
(C) Radium
(D) Silver
69- Rock salt is a mineral containing
(A) Magnesium
(B) Iron
(C) Sodium
(D) All of the above
70- Which carbohydrate is used in silvering of mirror?
(A) Lead
(B) Silver
(C) Sucrose
(D) Fructose
71- A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is
(A) Less than one
(B) Zero
(C) One
(D) None of the above
72- Chocolates can be bad for health because of a high content of
(A) Zinc
(B) Nickel
(C) Lead
(D) All of the above
73- Heavy alcohol consuming people generally die of
(A) Blood cancer
(B) Liver cancer
(C) Cirrhosis
(D) Heart failure
74- Most fish do not sink in water because of the presence of
(A) More water
(B) Streamlined shape
(C) Air shortage
(D) Swim bladder
75- Quinine, the commonly used drug to treat malaria is obtained from which part of a plant?
(A) Leaves
(B) Roots
(C) Fruits
(D) Stem bark
76- What vessel carries the venous blood to the lungs for oxygenation?
(A) Pulmonary arteries
(B) Pulmonary veins
(C) Both A and B
(D) Right ventricle
77- Which of the following is a microelement?
(A) Chlorine
(B) Nitrogen
(C) Hydrogen
(D) Oxygen
78- Cement containing excess amount of lime
(A) Is slow setting
(B) Becomes stronger
(C) Cracks during setting
(D) No change
79- Dry ice is
(A) Solid ammonia
(B) Solid zinc
(C) Solid ice
(D) Solid carbon dioxide
80- Which of the following metal is found in chlorophyll?
(A) Magnesium
(B) Calcium
(C) Barium
(D) Calcium carbonate
81- Trace metal present in insulin is
(A) Cobalt
(B) Iron
(C) Calcium
(D) Zinc
82- Water is used in car radiator because of its
(A) Low boiling point
(B) Low density
(C) High specific heat capacity
(D) None of the above
83- Which of the following is a deficiency disease?
(A) Asthma
(B) Scurvy
(C) Jaundice
(D) Cancer
84- Which of the following animals has Clitellum?
(A) Earthworm
(B) Centipede
(C) Fish
(D) Tigers
85- The acid which is secreted by the glands in the stomach wall is
(A) Phosphoric acid
(B) Uric acid
(C) Hydrochloric acid
(D) None of the above
86- Which one of the following organ excretes water, fat and various catabolic wastes?
(A) Kidney
(B) Liver
(C) Skin
(D) Salivary gland
87- The slope of velocity time graph represents
(A) Acceleration
(B) Speed
(C) Time
(D) None of the above
88- The earth wire of a cable is connected to
(A) The Earth wire
(B) The outer metallic body of the appliance
(C) The fuse of the appliance
(D) All of the above
89- Wave winding is suitable for
(A) High speed generators
(B) Low voltage generators
(C) High Voltage generators
(D) All of the above
90- Boiling point of water in Fahrenheit scale is
(A) 0oC
(B) 180oC
(C) 100oC
(D) 212oC
91- Diesel engines are designed to operate on
(A) 4 stroke principle
(B) 2 stroke principle
(C) Both A and B
(D) None of the above
92-An aeroplanes is able to fly because
(A) It is lighter than air
(B) Moving air can lift object
(C) It is heavier than air
(D) None of the above
93- Deficiency of insulin cause
(A) Jaundice
(B) Rickets
(C) Diabetes
(D) Malaria
94- Universal receivers can receive blood from
(A) Only AB
(B) Only O
(C) Group O, A, B, AB
(D) Only B
95- Which one of the following lenses should be used to correct the defect of astigmatism?
(A) Cylindrical lenses
(B) Concave lenses
(C) Convex lenses
(D) Bifocal lenses
96- The causative agent of Tuberculosis is
(A) HIV
(B) Mycobacterium
(C) Both A and B
(D) None of the above
97- Which of the following is not a characteristics feature of X-rays?
(A) X-rays are pure energy, no charge, neutral
(B) They are longitudinal in nature.
(C) They have shorter wavelength of the electromagnetic spectrum.
(D) They are capable of travelling in a vaccum.
98- How long does it take light from the sun to reach the earth (approximately)?
(A) 1 minutes
(B) 4 minutes
(C) 5 minutes
(D) 8 minutes
99- When an electric bulb beaks what is the reason for a mild bang?
(A) The air rushes to the evacuated space
(B) A chemical reaction between gases
(C) Compressed gas rush out suddenly
(D) All of the above
100- The value of which of the following quantities remains the same in all system of units?
(A) Specific gravity
(B) Pressure
(C) Density
(D) All of the above
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