Basic science



Q.1. Instrument used for measuring very high temperature is
A. Pyroscope
B. Pyrometer
C. Seismograph
D. Xylometer
Ans. Pyrometer


Q.2. When white light is passed through a prism, it splits into how many colours.
A. 5
B. 6
C. 7
D. 8
Ans. 6


Q.3. The strongest part(s) of a magnet is are
A. North pole
B. South pole
C. North and south pole
D. Median of north and south pole
Ans. North and south pole


Q.4.  On 11 February 2016 The LIGO Scientific Collaboration announced the detection of
A. Electromagnetic waves
B. Seismic waves
C. Gravitational waves
D. Radio waves
Ans. Gravitational waves


Q.5. The reflection of sound is called
A. Frequency
B. Vibration
C. Echo
D. Wave
Ans. Echo


Q.6. In night, when photosynthesis is stopped, plants
A. Take in Carbon Dioxide
B. Take in Oxygen
C. Give off Carbon Dioxide
D. Give off Oxygen
Ans. Gives off Carbon Dioxide


Q.7. The entropy of the universe is
A. Increasing
B. Decreasing
C. Constant
D. None of these
Ans. Increasing


Q.8. The planet which is easily visible from the Earth is?
A. Mercury
B. Venus
C. Mars
D. Jupiter
Ans. Venus


Q.9. The planets visible to us without using a telescope are ____.
A. 3
B. 4
C. 5
D. 6
Ans. 5


Q.10.  During winter in cold countries, what among the following is mixed to melt the ice on the icy roads.
A. Salt
B. Chlorine
C. Carbon dioxide
D. Water
Ans. Salt

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