NDA General Ability 16 April 2023 | Chemistry Question 192 | General Science

General Science

Physics

Chemistry

Biology

NDA General Ability 16 April 2023

MCQ (Single Correct Answer)

-1.33

Mica is mainly used in:

food and beverage industry.

iron and steel industry.

aluminium industry.

electrical and electronic industries.

NDA General Ability 16 April 2023

MCQ (Single Correct Answer)

-1.33

What is the specific purpose of using potassium hydroxide during the saponification process?

To obtain soaps which are hard on the skin

To obtain soaps which are soft on the skin

To obtain natural fragrance

To make the saponification very economical

NDA General Ability 16 April 2023

MCQ (Single Correct Answer)

-1.33

Which one of the following is the correct arrangement of metals in the decreasing order of their reactivity?

Iron, Sodium, Silver, Copper

Silver, Copper, Iron, Sodium

Sodium, Copper, Silver, Iron

Sodium, Iron, Copper, Silver

NDA General Ability 16 April 2023

MCQ (Single Correct Answer)

-1.33

Which among the following statements is not correct with respect to allotropes of Carbon?

Graphite is a good conductor of electricity.

Diamond is the hardest substance known.

Fullerene is one of the allotropes of carbon.

Next to diamond, graphite is the second hardest known substance.

Questions Asked from Marks 4