Question
On a clean glass plate, a drop of water spreads to form
a thin layer whereas a drop of mercury remains almost spherical because:Solution
The cohesion (attraction between molecules) of mercury is greater than its adhesion (attraction to glass), causing it to form a spherical shape.
Ethane gas has a slightly _____ taste.
Which of the following isotope of hydrogen is radioactive in nature?
Acid rain is caused due to pollution of the atmosphere by:
Magnesium has atomic number as 12. Find out its valiancy.
_________is a formula for rust.
Which polymer is formed by the copolymerization of phenol and formaldehyde?
Which endocrine gland requires iodine to synthesize a particular hormone, whose deficiency may cause goitre disease?
The motion of an object under free fall is an example of which of the following?
When cathode rays strike a target of high atomic weight, they give rise to:
Anemometer is used to measure –
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