Milk of magnesia, used as an antacid, is a suspension of which compound?
Correct answer C. Magnesium hydroxide
Topic / 50 questions
Chemistry MCQs
Chemistry MCQs in everyday science cover the chemistry behind daily life, such as common compounds, alloys, fuels, elements and environmental issues like ozone depletion. They help candidates for CSS, PMS, public service commission and staff selection exams. Every question shows its correct answer instantly, so you can check general science facts quickly.
What is the chemical name of baking soda?
Correct answer C. Sodium bicarbonate
Washing soda is the common name of which compound?
Correct answer B. Sodium carbonate decahydrate
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Plaster of Paris is chemically known as what?
Correct answer A. Calcium sulphate hemihydrate
Bleaching powder is commonly known by which chemical name?
Correct answer C. Calcium oxychloride
Quicklime is the common name of which compound?
Correct answer B. Calcium oxide
Which acid gives vinegar its sour taste?
Correct answer A. Acetic acid
The sting of an ant or a bee injects mainly which acid?
Correct answer A. Formic acid
Curd and sour milk contain which acid?
Correct answer C. Lactic acid
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Which acid is secreted in the human stomach to help digestion?
Correct answer D. Hydrochloric acid
What is ‘dry ice’?
Correct answer B. Solid carbon dioxide
Which metal is a liquid at ordinary room temperature?
Correct answer A. Mercury
Liquefied petroleum gas (LPG) used for cooking consists mainly of which gases?
Correct answer B. Propane and butane
Galvanisation protects iron from rusting by coating it with which metal?
Correct answer B. Zinc
The ‘lead’ in an ordinary pencil is actually made of which material?
Correct answer B. Graphite
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Which acid is used in the lead-acid batteries of cars?
Correct answer A. Sulphuric acid
Copper sulphate crystals are commonly known as what?
Correct answer D. Blue vitriol
Which gas is dissolved under pressure to make soft drinks fizzy?
Correct answer A. Carbon dioxide
A solution that turns red litmus paper blue is what?
Correct answer B. Basic
Which acid is found naturally in tamarind and grapes?
Correct answer A. Tartaric acid
About Chemistry MCQs
This set covers the practical chemistry that general science papers favour. Questions ask what CNG stands for, the chemical name of quartz, which metals make up German silver, the most abundant element in the universe, and which biological molecules contain phosphorus. You will also see items on how ocean salinity is expressed and on chlorofluorocarbons as the main cause of ozone thinning in the stratosphere. A few questions stray into astronomy, such as the orbits of comets. These facts appear often in everyday science and general ability papers.
Exams that include Chemistry MCQs
Pakistan
- CSS
- PMS
- PPSC
- FPSC
- NTS
India
- SSC CGL
- RRB NTPC
- UPSC CSE
- State PSC exams
Bangladesh
- BCS
- Government job tests
- Primary Assistant Teacher recruitment
Frequently asked questions
What is German silver made of?
German silver is an alloy of copper, nickel and zinc. Despite its name and silvery appearance, it contains no silver. It is used for cutlery, ornaments, musical instruments and electrical resistance wire because it resists corrosion and looks like silver.
Which gas is mainly responsible for ozone layer depletion?
Chlorofluorocarbons (CFCs) are the main cause of ozone layer thinning in the stratosphere. When ultraviolet light breaks CFC molecules apart, they release chlorine atoms, which destroy ozone in a chain reaction. CFCs were once common in refrigerators, aerosols and air conditioners.
Last reviewed October 2026