Which layer of the atmosphere contains ozone?
- (A) Mesosphere
- (B) Troposphere
- (C) Stratosphere
- (D) None of these
- (C) Stratosphere
“Deuterium” differs from Hydrogen in having:
- (A) Different atomic number but same atomic weight
- (B) Different atomic number and different atomic weight
- (C) Same atomic number and different atomic weight
- (D) None of these
- (C) Same atomic number and different atomic weight
The sunlight can reach a depth of how many meters in the ocean?
- (A) 100 meters
- (B) 80 meters
- (C) 200 meters
- (D) None of these
- (C) 200 meters
Soap is a/an:
- (A) Acid
- (B) Salt
- (C) Base
- (D) None of these
- (B) Salt
The number of spark plugs needed in a diesel engine is:
- (A) 2
- (B) 3
- (C) 0
- (D) 4
- (C) 0
In gaseous discharge tube, the color of light emitted by helium is:
- (A) Red
- (B) Yellow
- (C) Blue
- (D) None of these
- (B) Yellow
Which color is emitted by neon when electricity passes through it?
- (A) Green
- (B) Red
- (C) Yellow
- (D) None of these
- (B) Red
Omar Khayyam was a (Persian):
- (A) Poet
- (B) Mathematics
- (C) Astronaut
- (D) All of these
- (D) All of these
Methane is used in daily life with the name of:
- (A) Carbon dioxide
- (B) Natural gas
- (C) Liquid gas
- (D) None of these
- (B) Natural gas
The glittering nature of diamond is due to:
- (A) Giant polymer structure
- (B) Quality of diamond
- (C) High refractive index
- (D) None of these
- (C) High refractive index