Science Stream Topics
Undergraduate level — Science Stream
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quiz Questions
Q31
The lightest gas is
Joule
Newton
Watt
Hydrogen
Explanation
Hydrogen is the lightest element and gas.
Q32
Ozone is an allotrope of
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Watt
Oxygen
Newton
Explanation
Ozone is triatomic form of oxygen.
Q33
The hardest natural substance is
Newton
Watt
Diamond
Joule
Explanation
Diamond is hardest natural material on Mohs scale.
Q34
The most abundant gas in Earth atmosphere is
Nitrogen
Watt
Newton
Joule
Explanation
Nitrogen forms about 78 percent of atmosphere.
Q35
The nearest star to Earth is
Newton
Joule
Watt
Sun
Explanation
The Sun is the star closest to Earth.
Q36
The study of earthquakes is called
Seismology
Joule
Watt
Newton
Explanation
Seismology studies earthquakes and seismic waves.
Q37
Richter scale measures
Magnitude of earthquakes
Newton
Watt
Joule
Explanation
Richter scale expresses earthquake magnitude.
Q38
The gas used in fire extinguishers is commonly
Joule
Watt
Carbon dioxide
Newton
Explanation
CO2 extinguishers displace oxygen around flames.
Q39
Acid present in vinegar is
Joule
Newton
Acetic acid
Watt
Explanation
Vinegar contains dilute acetic acid.
Q40
Baking soda is chemically
Joule
Sodium bicarbonate
Watt
Newton
Explanation
Baking soda is NaHCO3.