NDA General Ability 13 April 2025 | Chemistry Question 142 | General Science

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Chemistry

Biology

NDA General Ability 13 April 2025

MCQ (Single Correct Answer)

-1.33

Which one of the following oxides is a neutral oxide?

CO₂

Na₂O

MgO

NDA General Ability 13 April 2025

MCQ (Single Correct Answer)

-1.33

Which one of the following is also known as Dry ice in its solid form?

SiO₂

CO₂

CaO

MgO

NDA General Ability 13 April 2025

MCQ (Single Correct Answer)

-1.33

Which one of the following statements is NOT correct?

A scale measuring hydrogen ion concentration in a solution is called pH scale

The higher the hydrogen ion concentration in a solution, higher is its pH

We can measure pH generally from 0 to 14 on a pH scale

The 'p' in pH stands for 'potenz' in German meaning power

NDA General Ability 13 April 2025

MCQ (Single Correct Answer)

-1.33

Which one of the following statements is NOT correct?

Half mole of nitrogen gas is measured 11·2 litre at STP

17 gram of ammonia gas contains 6·022 × 10²³ molecules at STP

22·4 litre of CO₂ gas at STP contains 44 gram of molecules

4 gram of hydrogen gas contains 6·022 × 10²³ molecules

Questions Asked from Marks 4