1. Atom is the smallest part of matter which takes part in chemical reactions.
True
False
Answer: Option A
2. Atmospheric pressure is measured by
Tonometer
Pyrometer
Barometer
Thermometer
Answer: Option C
3. 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
4. When a body is immersed partly or wholly in a liquid, there is an apparent loss in weight of the body which is equal to the weight of liquid displaced by the body.
True
False
Answer: Option A
Explanation:
TRUE, it is Archimedes Principle.
5. Harry Brearley has invented
Electric iron
Electromagent
Stainless Steel
Gramophone
Answer: Option C
Explanation:
Harry Brearley of England has invented Stainless Steel in 1913,
Electric iron has been invented by H.W. Seeley of USA in 1882,
Electromagent has been invented by W.Sturgeon of England in 1824,
Gramophone has been invented by T.A. Edison of USA in 1878.