61. A can run 1 km in 4 min 54 sec and B in 5 min. How many metres start can A give B in a Km race, so that the race may end in a dead heat?
A. 16 m
B. 18 m
C. 20 m
D. 14.5 m
62. Washing soda is the common name for-
A. Calcium carbonate
B. Calcium bicarbonate
C. Sodium carbonate
D. Sodium bicarbonate
63. Amlagams are-
A. Alloys which contain carbon
B. Alloys which have great resistance to abrasion
C. Alloys which contain mercury as one of the contents
D. Highly coloured alloys
64. The main important feature of neutron bomb is that when it is dropped on a city, it would damage-
A. Both the living organisms and buildings
B. The buildings but not the living organisms
C. The living organisms but spare buildings
D. None of the above
65. In which of the following processes light energy is converted into chemical energy?
A. Respiration
B. Fermentation
C. Photosynthesis
D. Photorespiration
66. A chronometer measures-
A. Sound waves
B. Time
C. Water waves
D. Colour contrast
67. Nautical mile is a unit of distance used in-
A. Astronomy
B. Navigation
C. Road mile
D. Measuring the boundaries of a nation
68. Very small time intervals are accurately measured by the-
A. Pulsars
B. Quart Clocks
C. Atomic clocks
D. White dwarfs
69. The principle of working of periscope is based on-
A. Reflection only
B. Refraction only
C. Reflection and Refraction
D. Reflection and Interference
70. Hardware is related to-
A. Calculator
B. Computer
C. Acids
D. Heavy metals
71. The Spring balance works on the principle of-
A. Boyle’s law
B. Hooke’s law
C. Bernoulli’s principle
D. Pascal’s law
72. Which of the following statements is correct?
A. Dynamo converts electrical energy into electrical energy and electrical energy
B. Dynamo converts mechanical energy into electrical energy and electrical motor converts electrical into mechanical energy
C. Both dynamo and electric motor converts electrical energy into mechanical energy
D. Both dynamo and electric motor converts mechanical energy into electrical energy
73. Which of the following works on Bernoulli’s principle?
A. Gas lighter
B. Gas stove
C. Bunsen burner
D. None of these
74. Recoil of a gun is an example of-
A. conservation of mass
B. conservation of energy
C. conservation of P.E into K.E
D. conservation of linear momentum
75. Wisdom teeth normally grow during the age of-
A. 12-15 years
B. 17-30 years
C. 34-40 years
D. 40-50 years
76. A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the-
A. Pupil
B. Cornea
C. Iris
D. Choroid
77. A person with AB blood group is sometimes called a universal recipient because of the-
A. Presence of antibodies in his blood
B. Lack of antibodies in his blood
C. Lack of antigen in his blood
D. Lack of both antigens and antibodies in his blood
78. The largest gland in the human body is-
A. Heart
B. Liver
C. Kidney
D. Brain
79. The maximum temperature the human skin can tolerate without getting blisters is-
A. 400 C
B. 600 C
C. 800 C
D. None of these
80. An ant can see the object all around it due to the presence of-
A. Simple eyes
B. Eyes over the head
C. Well developed eyes
D. Compound eyes
Leave a Reply