NDA 2015 Paper 2 | Chemistry Question 2 | General Science

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NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements is correct?

Rutherford's $$\alpha$$-particle scattering experiment led to the discovery of electron

J.J. Thomson suggested that the nucleus of an atom contains

The atomic number of an element is the same as the number of protons in the nucleus of its atom

The mass number of an atom is equal to the number of electrons in its shells

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

The alkali metals have relatively low melting point. Which one of the following alkali metals is expected to have the highest melting point?

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Consider the following reaction,

$$C{H_4}(g) + {H_2}(g)\buildrel {1270\,K} \over \longrightarrow CO(g) + 3{H_2}(g)$$

In the reaction given above, the mixture of CO and H₂ is

natural gas

water gas

producer gas

industrial gas

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Addition of gypsum to cement

reduces setting time of cement

produces very light colour of cement

increases setting time of cement

shining surface is formed

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Questions Asked from Marks 2.5