11. Where is the location of the heart in the human body?
A. Right side of chest
B. Immediately above stomach
C. Left side of chest
D. None of the above
[toggle] Answer – C [/toggle]
12. Convex mirror is generally used in ________.
A. Solar cookers
B. Ophthalmoscope
C. Reflector for headlight
D. Rear view mirror
[toggle] Answer – D [/toggle]
13. In which medium speed of the sound is fastest?
A. Solid
B. Liquid
C. Gas
D. None of the above
[toggle] Answer – A [/toggle]
14. What is the chemical formula of ‘chloroform’?
A. C2H6O
B. CHCl3
C. C4H10
D. C12H22O11
[toggle] Answer – B [/toggle]
15. What is the formula of Methyl Isocynate which was leaked in Bhopal gas tragedy?
A. CH3NCO
B. CH3COOH
C. C4H10
D. C2H2
[toggle] Answer – A [/toggle]
16. What is the atomic no. of sulfur?
A. 20
B. 18
C. 16
D. 8
[toggle] Answer – C [/toggle]
17. Among the following gases, which is the lightest gas in the periodic table?
A. Oxygen
B. Methane
C. Nitrogen
D. Hydrogen
[toggle] Answer – D [/toggle]
18. What is the unit of Power?
A. Ampere
B. Volt
C. Watt
D. Kilowatt-hour
[toggle] Answer – C [/toggle]
19. Which animal family does frog belong to?
A. Orthoptera
B. Anura
C. Vertebrata
D. None of the above
[toggle] Answer – C [/toggle]
20. What is the ratio of masses of hydrogen and oxygen in the water?
A. 1: 4
B. 1: 8
C. 1: 16
D. 1: 64
[toggle] Answer – B [/toggle]