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Chemistry Questions and Answers

Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.

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791.

Consider the following reaction equation
H₃O⁺_(aq) + OH_(aq) $\rightarrow$ 2H₂O₍₁₎
The reaction represents

Esterification

Hydrolysis

Neutralization

Redox

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

792.

The pH of four solutions M,N,Q and R are 2,6,8 and 11 respectively.
Which of the following deductions about the solutions is correct?

The pH of N is increased when the solution is diluted

The pH of Q is increased when the solution is evaporated

M is the most alkaline solution

R is the most acidic solution

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

793.

When NH₄Cl_(s) is dissolved in water, the container feels cold to touch. This implies

The process is endothermic

The process is exothermic

NH₄Cl forms a saturated solution

NH₄Cl is highly soluble in water

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

794.

An aqueous solution of (NH4)2 SO4 is

Acidic

Alkaline

Amphoteric

Neutral

View answer & explanation

Correct answer is A

Ammonium sulphate is an ACIDIC SALT. This is because it is formed when sulphuric acid reacts with ammonia. Since, sulphuric acid is a strong acid and ammonia is a weak base, so it gets acidic in nature.