1) Which of the following is not a characteristic of particles of matter?
C
2) Which of the following is a physical change?
C
3) The chemical symbol of sodium is:
B
4) Which of the following has the highest kinetic energy?
C
5) Which separation technique is used to separate a mixture of salt and water?
B
6) The atomic number of an element is the same as the number of:
D
7) The SI unit of force is:
A
8) Which Newton’s law explains the working of a rocket?
C
9) The acceleration due to gravity on the moon is:
C
10) What is the SI unit of work?
A
11) Which of the following is an example of a contact force?
C
12) Which type of energy is stored in a stretched rubber band?
C
13) What is the frequency of a wave if its time period is 0.02 seconds?
B
14) Which property of sound is responsible for the loudness of sound?
B
15) The speed of sound is maximum in:
D
16) The human ear can hear sounds in the frequency range of:
B
17) What is the chemical formula of carbon dioxide?
B
18) The atomic number of oxygen is:
B
19) The smallest unit of life is:
C
20) Which part of the cell controls all activities of the cell?
B
21) Which organelle is known as the powerhouse of the cell?
C
22) What is the function of xylem in plants?
B
23) The process by which green plants make their own food is called:
C
24) What is the major component of the cell wall in plants?
A
25) Which vitamin is produced in the human body when exposed to sunlight?
D
26) Which of the following is not a component of blood?
C
27) The structural and functional unit of the kidney is called?
B
28) Which part of the plant is responsible for photosynthesis?
C
29) Which gas is released during photosynthesis?
B
30) Which of the following is a non-metallic mineral?
C
31) Which component of blood helps in clotting?
C
32) What is the function of hemoglobin?
A
33) Which of the following organisms can fix atmospheric nitrogen?
B
34) The force acting per unit area is called?
B
35) Which of the following is a greenhouse gas?
C
36) What is the function of stomata in plants?
B
37) The blood vessel that carries blood from the heart to the body is called?
B
38) What is the function of the large intestine?
C
39) The excretory organ in humans is:
B
40) Which of the following is a chemical change?
C
41) What is the basic unit of all living organisms?
C
42) Which vitamin is essential for blood clotting?
D
43) Which planet is known as the Red Planet?
B
44) The process of conversion of water into vapor is called?
B
45) Which element is necessary for respiration in humans?
B
46) Which of the following is an example of a heterogeneous mixture?
C
47) What is the SI unit of power?
A
48) Which of the following diseases is caused by a virus?
D
49) What is the chemical name of common salt?
B
50) What is the main function of white blood cells?
C
51) Which of the following is a pure substance?
C
52) Which of the following is an example of a chemical reaction?
C
53) What is the smallest unit of an element?
B
54) Which scientist discovered the nucleus of an atom?
C
55) The number of protons in an atom is equal to its:
A
56) The device used to measure atmospheric pressure is called:
B
57) Which force keeps the planets in orbit around the Sun?
C
58) The unit of acceleration is:
B
59) The inertia of an object depends on its:
C
60) The time taken for one complete oscillation is called:
C
61) The ability of a body to do work is called:
C
62) Which law states that energy cannot be created or destroyed?
B
63) The phenomenon of reflection of sound waves is called:
C
64) What is the SI unit of charge?
C
65) What is the resistance of a conductor mainly dependent on?
A
66) Which device is used to measure electric current?
B
67) Which type of mirror is used in vehicle rear-view mirrors?
B
68) The change in focal length of the eye lens is controlled by:
C
69) The splitting of white light into its seven colors is called:
C
70) Which part of the human eye contains light-sensitive cells?
C
71) Which of the following is a biodegradable material?
C
72) Which layer of the atmosphere contains the ozone layer?
B
73) Which gas is responsible for global warming?
C
74) The process of water loss from plants through leaves is called:
C
75) The ‘Chipko Movement’ was associated with which environmental issue?
D
76) Which type of reproduction involves only one parent?
B
77) Which part of the flower develops into a fruit?
C
78) Which vitamin is essential for good eyesight?
A
79) What is the primary function of the ribosomes in a cell?
B
80) Which of the following is an example of an exothermic reaction?
C
81) Which of the following metals is the most reactive?
C
82) The atomic number of carbon is:
A
83) Which organ in the human body produces bile?
B
84) The largest organ in the human body is:
D
85) What is the main function of the human respiratory system?
B
86) Which instrument is used to measure humidity?
C
87) The ability of metals to be drawn into thin wires is called:
C
88) What is the process of conversion of a liquid into vapor at any temperature below its boiling point?
B
89) Which of the following is an example of a homogeneous mixture?
B
90) Which organelle is called the ‘suicidal bag’ of the cell?
C
91) The device used to measure electric potential difference is called:
B
92) What is the main constituent of biogas?
B
93) What is the function of the cerebrum in the human brain?
B
94) The energy possessed by a stretched rubber band is:
B
95) The loudness of a sound depends on:
B
96) Which of the following is an example of a non-renewable resource?
C
97) The process of depositing a layer of metal on another object using electricity is called:
A
98) What is the main cause of acid rain?
B
99) What is the role of hemoglobin in the blood?
B
100) The SI unit of temperature is:
C