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

Which of the following is used as an antiseptic in hospitals?

1. Methanol
2. Propanol
3. Ethanol
4. Vinegar

The atomic mass of sulphur (S), oxygen (O) and carbon (C) are approximately 32, 16 and 12 respectively. Which of the following statements regarding the number of mole in 88 g of CO₂ and 128 g of SO₂ is correct?

P. 88g of CO₂ contains equal number of moles in 128 g of SO₂.

Q. 88g of CO₂ contains double the number of moles in 128g of SO₂

1. Only P
2. Only Q
3. Both P and Q
4. Neither P nor Q