Explore topic-wise MCQs in General Knowledge (GK).

This section includes 621 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.

1.

Urea is a -

A. Sodium fertilizer
B. Phosphatic fertilizer
C. Nitrogenous fertilizer
D. Potassium fertilizer
Answer» D. Potassium fertilizer
Discussion
2.

What is "milk of magnesia" chemically?

A. Magnesium carbonate
B. Sodium bicarbonate
C. Calcium hydroxide
D. Magnesium hydroxide
Answer» E.
Discussion
3.

Which of the following is a natural dye?

A. Crystal violet
B. Aniline blue
C. Alizarin
D. Phenolphthalein
Answer» D. Phenolphthalein
Discussion
4.

is the process in which acids and bases react to form salts and water.

A. Neutralization
B. Electrolysis
C. Distillation
D. Hydrolysis
Answer» B. Electrolysis
Discussion
5.

The gas usually causing explosions in coal mines is

A. Hydrogen
B. Carbon monoxide
C. Air
D. Methane
Answer» E.
Discussion
6.

Electromagnet is constructed with which of the following?

A. Steel
B. Soft Iron
C. Aluminium
D. Nickel
Answer» C. Aluminium
Discussion
7.

Commercial Vaseline is derived from -

A. plant gums
B. coal tar
C. wool wax
D. petroleum
Answer» E.
Discussion
8.

Name the particle that is most essential to continue the chain reaction during the fission of uranium -

A. Electron
B. Proton
C. Neutron
D. Positron
Answer» D. Positron
Discussion
9.

Colour imparted to the Bunsen flame by strontium salt is -

A. bluish green
B. apple-green
C. brick red
D. crimson red
Answer» E.
Discussion
10.

The main source of Naphthalene is -

A. Charcoal
B. Camphor
C. Coal-tar
D. Diesel
Answer» D. Diesel
Discussion
11.

Helium gas is used in gas balloons instead of hydrogen gas be-cause it is

A. lighter than hydrogen
B. more abundant than hydrogen
C. non-combustible
D. more stable
Answer» D. more stable
Discussion
12.

Dry powder fire extinguishers contain -

A. sand
B. sand and sodium carbonate
C. sand and potassium carbonate
D. sand and sodium bicarbonate
Answer» E.
Discussion
13.

In which following processes light energy is converted into chemical energy?

A. Respiration
B. Fermentation
C. Photosynthesis
D. Photorespiration
Answer» D. Photorespiration
Discussion
14.

Which of the following hormone is called emergency hormone?

A. Insulin
B. Adrenaline
C. Oestrogen
D. Oxytocir
Answer» C. Oestrogen
Discussion
15.

The wire of flash bulb is made of :

A. Copper
B. Barium
C. Magnesium
D. Silver
Answer» D. Silver
Discussion
16.

Molasses a by-product in the manufacture of sugar, is converted into -

A. alcohol
B. paper
C. fuel
D. pulp
Answer» B. paper
Discussion
17.

The coloured discharge tubes for advertisement mainly contain -

A. Xenon
B. Argon
C. Helium
D. Neon
Answer» E.
Discussion
18.

The common name for the com-pound having formal NaOH is

A. Caustic soda
B. Caustic potash
C. Soda ash
D. Sodium hydroxide
Answer» B. Caustic potash
Discussion
19.

Muscle fatigueisaccumulation of : (1) Pyruvic acid(2) Lactic acid(3) Oxalacetic acid(4) Uric acidQ.30) A mixture of water and alcohol can be separated by -

A. Filtration
B. Evaporation
C. Distillation
D. Decantation
Answer» D. Decantation
Discussion
20.

Energy stored in a coal is -

A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
Answer» D. nuclear energy
Discussion
21.

Oil of vitriol is -

A. nitric acid
B. sulfuric acid
C. hydrochloric acid
D. phosphoric acid
Answer» C. hydrochloric acid
Discussion
22.

wo elements which are used to absorb neutrons to control the chain reaction during nuclear fission are -

A. Boron and Cadmium
B. Boron and Plutonium
C. Cadmium and Uranium
D. Uranium and Boron
Answer» B. Boron and Plutonium
Discussion
23.

Photoxidation process is initiated by

A. light
B. heat
C. oxygen
D. catalyst
Answer» B. heat
Discussion
24.

What is the objective of the 'Kyoto Protocol'?

A. To abolish child labour
B. To eliminate nuclear weapons
C. To increase ground water levels
D. To reduce greenhouse gases
Answer» E.
Discussion
25.

A solution is -

A. a homogeneous mixture of two or more substances
B. a solid dissolved in a liquid
C. a solid dissolved i water
D. a mixture of two liquids
Answer» B. a solid dissolved in a liquid
Discussion
26.

Neuron is -

A. Fundamental unit of energy
B. Particle released in radioactive emission
C. Antiparbcle of neutron
D. Fundamental unit of nervous system
Answer» E.
Discussion
27.

Alcoholic OH) group can be identified by :

A. Tolien's Reagent Test
B. Esterification Test
C. FeCl3 Test
D. Ozonolysis Reaction
Answer» D. Ozonolysis Reaction
Discussion
28.

Aerosol is -

A. Suspended solid particles in air
B. Pollutant gas, present in air
C. (8) Microbes, present in air
D. Green house gas present in air
Answer» B. Pollutant gas, present in air
Discussion
29.

Stilton is a

A. Semiconductor
B. Insulator
C. Nonconductor
D. Conductor
Answer» B. Insulator
Discussion
30.

Slag is a name given for -

A. molten iron
B. molten sand
C. molten alumina
D. molten calcium silicate
Answer» D. molten calcium silicate
Discussion
31.

The value of Avogadro Number is -

A. 6.023 x 1022
B. 6.023 x 1023
C. 6.023 x 1024
D. 6.023 x 1025
Answer» C. 6.023 x 1024
Discussion
32.

Nitrogen fixation is a process of -

A. Assimilation of nitrate
B. Utilisation of nitrogen gas
C. Conversion of organic nitrogen to proteins
D. Conversion of molecular nitrogen to ammonia
Answer» E.
Discussion
33.

Air is said to be saturated when -

A. it contains maximum content of water vapour
B. its pressure is minimum
C. its thickness is maximum
D. it blows over the barren land
Answer» B. its pressure is minimum
Discussion
34.

Which is/ are the important raw materials in cement industry?

A. Limestone
B. Gypsum and Clay
C. Clay
D. Limestone and Clay
Answer» E.
Discussion
35.

The father of modern chemistry is

A. Priestley
B. Lavoisier
C. Dalton
D. Mendeleeff
Answer» C. Dalton
Discussion
36.

Which one of the following is used as preservative for foodstuff?

A. Sodium Benzoate
B. Picric acid
C. Glycerine
D. Sodium Chloride
Answer» B. Picric acid
Discussion
37.

Saturated hydrocarbons are called -

A. Alkynes
B. Alkenes
C. Alkanes
D. All of the above
Answer» D. All of the above
Discussion
38.

Which of the following is a supercooled liquid?

A. Ice Cream
B. Teflon
C. Glass
D. Mercury
Answer» D. Mercury
Discussion
39.

On heating, Gypsum loses certain percentage of its water content and becomes

A. Chalk
B. Calcium sulphate
C. Plaster of Paris
D. a pearl
Answer» D. a pearl
Discussion
40.

What is the element required for solar energy conversion?

A. Beryllium
B. Tantalum
C. Silicon
D. Ultra pure carbon
Answer» D. Ultra pure carbon
Discussion
41.

What is the chemical name for `Baking Soda'?

A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium nitrite
D. Sodium nitrate
Answer» C. Sodium nitrite
Discussion
42.

Enzymes are -

A. Steroids
B. Carbohydrates
C. Proteins
D. Lipids
Answer» D. Lipids
Discussion
43.

The I.C Chip used in a computer is made up of -

A. Silicon
B. Chromium
C. Gold
D. Lead
Answer» B. Chromium
Discussion
44.

Which of the following is ozone depleting pesticide?

A. D.D.T.
B. Benzene
C. Methyl bromide
D. Ethylene ozonide
Answer» D. Ethylene ozonide
Discussion
45.

Which one of the following is the softest

A. sodium
B. iron
C. aluminium
D. lithium
Answer» B. iron
Discussion
46.

Which of the following type of coal has the lowest proportion of volatile matter?

A. Lignite
B. Peat
C. Bituminous
D. Anthracite
Answer» E.
Discussion
47.

The colour of Emerald is -

A. Violet
B. Yellow
C. Deep Green
D. Prussian Blue
Answer» D. Prussian Blue
Discussion
48.

Sweat contains water and .

A. Citric acid
B. Lactic acid
C. Salt
D. Vinegar
Answer» D. Vinegar
Discussion
49.

The next higher homologue of C6H14 is -

A. C6H14
B. C7H12
C. C6H12
D. C7H16
Answer» E.
Discussion
50.

Mercury is a

A. solid metal
B. liquid metal
C. solid non-metal
D. liquid non-metal
Answer» C. solid non-metal
Discussion