Question Detail
Sudden fall in barometer is indication of
- Storm
- Rain
- Tide
- Clear weather
Answer: Option A
1. 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.
2. Which instrument is used in submarine to see the objects above sea level ?
- Pykometer
- Polygraph
- Photometer
- Periscope
Answer: Option D
Explanation:
Pykometer - used to determine the density and coefficient of expansion of liquids,
Polygraph - used to record changes in heartbeat, blood-pressure and respiration,
Photometer - used to compare luminous intensity of the source of light.
3. Scalar Quantities are
- physical quantities which have magnitude only and no direction
- physical quantities which have no magnitude only and only direction
- physical quantities which have magnitude only and direction
- physical quantities which have no magnitude and no direction
Answer: Option A
4. Siphon will fail to work if
- both its limbs are of unequal length
- the temperature of the liquids in the two vessels are the same
- the level of the liquid in the two vessels are at the same height
- the densities of the liquid in the two vessels are equal
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 :)