Chemistry · Science General

Common Chemical Compounds and Reactions

1,204 Questions

Common chemical compounds and reactions questions test your knowledge of everyday chemicals, their formulas, and their interactions. Topics include properties of acids and bases, hard water chemistry, and compounds like baking soda and plaster of paris. This section is essential for general science preparation.

Acids and basesPlaster of parisHard water chemistryCommon chemical formulasEveryday chemical reactions

Common Chemical Compounds and Reactions Questions

Multiple choice

The compound used for the preservation of stock solutions is

  1. hafnium(IV) chloride

  2. hexadecacarbonylhexarhodium

  3. hydrazine

  4. hydrazoic acid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrazoic acid is a colourless, volatile, and extremely explosive liquid at room temperature and pressure. It is a compound of nitrogen and hydrogen, having chemical formula HN3.It is used primarily for preservation of stock solutions, and as a reagent.

Multiple choice

Which of the following alums is used in tanning?

  1. Chrome alum

  2. Ammonium alum

  3. Soda alum

  4. Potash alum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chrome alum, KCr(SO4)2·12H2O is a dark violet crystalline double sulfate of chromium and potassium. It is used in tanning.

Multiple choice

Which of the following salts will give a neutral solution?

  1. Ammonium chloride

  2. Potassium sulphate

  3. Ammonium sulphate

  4. Sodium carbonate

  5. Sodium acetate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Potassium sulphate will give a neutral solution because it is formed from a strong acid (sulphuric acid) and a strong base (potassium hydroxide).

Multiple choice

Sodium hydroxide is obtained by the electrolysis of sodium chloride solution. Which of the following is not a use of sodium hydroxide?

  1. Sodium hydroxide is used for making soaps and detergents.

  2. Sodium hydroxide is used for making artificial textile fibre.

  3. Sodium hydroxide is used in the manufacturing of paper.

  4. Sodium hydroxide is used in purifying bauxite ore.

  5. Sodium hydroxide is used for making solvents for drycleaning.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as this is not a use of sodium hydroxide. Sodium hydroxide is not used for making solvents for drycleaning.

Multiple choice

The chemical name of 'Common salt' is ______.

  1. Sodium chloride

  2. Sodium nitrate

  3. Ammonium chloride

  4. Calcium chloride
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Common salt's chemical name is Sodium chloride (NaCl). It is the most common salt found in seawater and is widely used for food seasoning and preservation. The name reflects its composition of sodium and chlorine ions.

Multiple choice

Out of the following, which is used as a raising agent for flat baked items, like cookies and crackers?

  1. Ammonium bicarbonate

  2. Ceric ammonium nitrate

  3. Ammonium chloride

  4. Ammonium hydroxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ammonium bicarbonate is a white, crystalline powder with a slight odour of ammonia .It is insoluble in acetone and alcohols. When reacted with acids, carbon dioxide is produced, while reactions with alkalis give ammonia. It is used in the food industry as a raising agent for flat baked goods, such as cookies and crackers.

Multiple choice

Among the following, ----------------------- acts as an opacifying agent for glass, ceramics and enamels.

  1. Antimony pentachloride

  2. Antimony pentafluoride

  3. Antimony trioxide

  4. Arsine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Antimony trioxide is the inorganic compound with the formula Sb2O3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite.It is an opacifying agent for glass, ceramics and enamels.

Multiple choice

Among the following, -------------------- is primarily used in baking (cooking) industry.

  1. Sodium bicarbonate

  2. Barium hydroxide

  3. Barium iodide

  4. Barium nitrate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is a white solid that is crystalline but often appears as a fine powder. It has a slightly salty, alkaline taste. It is a component of the mineral natron and is found dissolved in many mineral springs.It is primarily used in cooking (baking) where it reacts with other components to release carbon dioxide, which causes dough to rise.