Chemistry in Daily Life — Part 2: 40 MCQs with Explanations

Gold is the correct answer to “Which metal is non toxic in nature”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

For seeing objects at the surface of water from a submarine under water, the instrument used is Periscope .

Boiling point of pure water is 100’C .

The main cause of air pollution is Burning Of Fuels .

gravity is the correct answer to “The atmospheric air is held to the Earth by”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

saponification is the correct answer to “The process involved in making soap is called”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Freezing point of water at Fahrenheit Scale is 32 °F.

A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls behind him .

the density of salt solution exceeds the density of eggs is the correct answer to “An egg sinks in soft water but floats in a concentrated solution of salt because”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Helium is the correct answer to “Which gas is commonly used in balloons and airships”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Hot is the correct answer to “Which water will freeze first”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Ozone is the correct answer to “Which gas does a Photocopier machine produce”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Helium is the correct answer to “Of the six noble gases in the periodic table, which is the lightest”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Hydrosphere is the correct answer to “Underground water and the water on the earth’s surface is called”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Water has high density and minimum volume at 4°C .

Hydrogen is the correct answer to “In the manufacture of Vanaspati Ghee/Banaspati Ghee which gas is used”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

When sugar is added to water, its boiling point: Increase .

Zinc is the correct answer to “For glavinizing of iron which of the following metals is used”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Permanent hardness of water may be removed by the addition of Sodium Carbonate .

Accumulation of salts in kidneys results in Kidney Stone .

87% is the correct answer to “Milk contains water”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Most soluble in water is: Sugar .

The element common to all acids is: Hydrogen .

The study of forces acting upon bodies in motion in the air is called Aerodynamics .

Example of gas having monoatomic molecules is Neon and argon .

Places where the temperature of air is above freezing point of the water, the precipitation will be in the form of Rain .

Places where the temperature of air is below freezing point of the water, the precipitation will be in the form of Snow .

Water is 50 times more viscous than Gases .

Copper, Tin and Zinc is the correct answer to “Which of the following are the ingredients of gun metal”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

The gas usually filled in the electric bulb is Nitrogen .

The gases used in different types of welding would include Oxygen and acetylene .

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is Helium .

Chemical formula for Water is H2O .

Soap and detergents remove the dirt from clothes due to Lowering of interfacial tension .

Sodium stearate is the correct answer to “Which of the following is a component of soap”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Hydrogen and Helium is the correct answer to “Mostly which gases found of the planet Jupiter”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

What is the third most common gas found in the air we breathe Argon .

H2SO4 is the correct answer to “What is the chemical formula for Sulfuric acid”. Items of this type are drawn from the Chemistry in Daily Life — Part 2 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

What is the chemical formula for Sodium carbonate Na2CO3 .

Brass gets discoloured in air because of the presence of which of the following gases in air Hydrogen sulphide .