NDA 2016 Paper 1 | Chemistry Question 40 | General Science

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NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following following is a reduction reaction?

$$2Mg(s) + {O_2}(g)\buildrel {} \over \longrightarrow 2MgO(s)$$

$$S(s) + {O_2}(g)\buildrel {} \over \longrightarrow S{O_2}(g)$$

$$2HgO(s)\buildrel {Heat} \over \longrightarrow 2Hg(l) + {O_2}(g)$$

$$Mg(s) + S(s)\buildrel {} \over \longrightarrow MgS(s)$$

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following oxides of nitrogen is known as 'anhydride' of nitric acid?

N₂O

N₂O₃

NO₂

N₂O₅

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following is the chemical name for baking soda?

Sodium bicarbonate (sodium hydrogen carbonate)

Sodium carbonate

Potassium bicarbonate (potassium hydrogen carbonate)

Potassium carbonate

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

The following question consist of two statements, Statement I and Statement II. You have to examine these two statements carefully and select the answers to the question using the codes given below.

Statements

I. Petroleum is a mixture of many different hydrocarbons of different densities.

II. The grade of petroleum depends mainly on the relative proportion of the different hydrocarbons.

Both the statements are individually true and Statement II is the correct explanation of Statement I

Both the statements are individually true, but Statement II is not the correct explanation of Statement I

Statement I is true, but Statement II is false

Statement I is false, but Statement II is true

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Questions Asked from Marks 2.5