The experiment which demonstrates that hydrogen chloride is highly soluble in water is ……………

1. Contact process
2. Fountain experiment
3. Haber's process
4. Ostwald's process

Concentrated sulphuric acid is

1. yellow in colour
2. blue in colour
3. a colourless liquid
4. green in colour

The table shown below gives information about four substances A, B, C and D

Identify the basic compounds from the above given substances.

1. A and B
2. B and C
3. A and D
4. C and D

Which of the following is correct about atomic size and electronegativity along a period from left to right?

P. decreases, Increases
Q. increases, Increases
R. increases, Decreases

1. Only P
2. Only Q
3. Only R
4. Both P and Q