Question Detail

Which instrument is used to measure sound under water ?

Hygrometer
Hygroscope
Hypsometer
Hydrophone

Answer: Option D

Explanation:

Hygrometer - is used to measure level of humidity,

Hygroscope - shows the changes in atmospheric humidity,

Hypsometer - is used to determine the boiling points of liquids.

1. Nuclear sizes are expressed in a unit named

Fermi
Angstrom
Newton
Tesla

Answer: Option A

2. What is unit of Work and Energy ?

Joule
kilogram
amphere
meter

Answer: Option A

3. Force of attraction between the molecules of different substances is called

Surface tension
Cohensive force
Adhesive force
None of above

Answer: Option C

Explanation:

Cohensive force - Force of attraction between the molecules of same substance is called Cohensive force.

4. Atmospheric pressure is measured by

Tonometer
Pyrometer
Barometer
Thermometer

Answer: Option C

5. Which are the primary Colours ?

Yellow, Green, Blue
Red, Magenta, Blue
Red, Green, White
Red, Green, Blue

Answer: Option D

Explanation:

Red, Green, Blue are primary colours. All the colours can be produced by them by mixing in different proportions. Interesting :)