Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 4

EASY

NDA & NA EE

IMPORTANT

Earn 100

Human stomach produces acid $X$ which helps in digestion of food. Acid $X$ is

100% studentsanswered this correctly

Important Questions on Acids, Bases and Salts

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 5

Which one of the following is the strongest acid?

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 6

Amongst the trihalides of nitrogen, which one is the least basic?

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 7

The conjugate acid of

{NH}_{2}^{-}

is:

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 8

Which one of the following is amphoteric in nature?

MEDIUM

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 9

When an organic compound is heated with cupric oxide, a gas

X

and

H_{2} O

are produced as a result. When the gas

X

is passed through the lime water, it turns the lime water into milky. When it passed in the excess, the milky colour disappears. By the litmus solution, it is found that the gas

X

is acidic in nature. The gas

X

is

MEDIUM

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 13

Which of the following is incorrect?

EASY

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IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 14

Base turns red litmus blue and acids turns blue litmus red. A student tested a liquid with a red litmus paper, and it stayed red with no change. This shows that the liquid:

EASY

NDA & NA EE

IMPORTANT

Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Chemistry>Chapter 8 - Acids, Bases and Salts>Practice Exercise>Q 15

When concentrated

H_{2} {SO}_{4}

spills on the surface, it should be immediately cleared __________.