NDA 2016 Paper 2 | Chemistry Question 17 | General Science | NDA - ExamSIDE.Com

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General Science

Physics

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Chemistry

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Biology

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1

NDA 2016 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

There are six electrons, six protons and six neutrons in an atom of an element. What is the atomic number of the element?

A

6

B

12

C

18

D

24

2

NDA 2016 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following has different number of molecules? (All are kept at normal temperature and pressure)

A

3 g of hydrogen

B

48 g of oxygen

C

42 g of nitrogen

D

2 g of carbon

3

NDA 2016 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements is correct?

A

Covalent bonds are directional

B

Ionic bonds are directional

C

Both covalent and ionic bonds are directional

D

Both covalent and ionic bonds are non-directional

4

NDA 2016 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

When one strikes a safety match, the first step is

A

burning of sulphur

B

decomposition of potassium chlorate into potassium chloride and oxygen

C

conversion of a small amount of red phosphorus into white phosphorus

D

burning of glue and starch

Questions Asked from Marks 2.5