Chemistry set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 504 questions
Q.331 The 'Mass Number' of an element is the sum of:
A protons and electrons
B protons and neutrons
C neutrons and electrons
D protons only
Discuss / Board
Q.332 Which of the following is the 'Most Common' element in the universe?
A oxygen
B carbon
C hydrogen
D helium
Discuss / Board
Q.333 Which among the following is used as a 'Refrigerant' in ACs and Fridges?
A ammonia
B freon
C neon
D argon
Discuss / Board
Q.334 What is the common name of 'Calcium Carbonate'?
A limestone
B quicklime
C slaked lime
D bleaching powder
Discuss / Board
Q.335 Which among the following is known as 'Dry Ice'?
A solid oxygen
B solid nitrogen
C solid carbon dioxide
D solid helium
Discuss / Board
Q.336 Which of the following is used in the 'Manufacture of Glass'?
A sodium carbonate
B sodium bicarbonate
C sodium chloride
D sodium sulphate
Discuss / Board
Q.337 Which among the following is the 'Hardest' natural substance?
A iron
B diamond
C gold
D platinum
Discuss / Board
Q.338 Which gas is used in 'Electric Bulbs' to prolong the life of the filament?
A oxygen
B argon
C hydrogen
D methane
Discuss / Board
Q.339 Which among the following is used as an 'Anesthetic'?
A methane
B chloroform
C methanol
D acetylene
Discuss / Board
Q.340 Which among the following is used in 'Photography'?
A silver nitrate
B silver bromide
C sodium chloride
D potassium nitrate
Discuss / Board
Q.341 Which among the following is known as 'Philosophers Wool'?
A magnesium oxide
B zinc oxide
C aluminum oxide
D calcium oxide
Discuss / Board
Q.342 Which among the following is used in 'Matching' industry (Matchsticks)?
A white phosphorus
B red phosphorus
C yellow phosphorus
D black phosphorus
Discuss / Board
Q.343 Which gas is used in 'Lamps' for lighthouse?
A acetylene
B methane
C neon
D argon
Discuss / Board
Q.344 Which among the following is used as a 'Water Purifier'?
A alum
B borax
C common salt
D sugar
Discuss / Board
Q.345 Which among the following is used in 'Firecrackers' for green color?
A strontium
B barium
C calcium
D sodium
Discuss / Board
Q.346 Which among the following is used in 'Batteries' of mobile phones?
A lithium
B sodium
C magnesium
D zinc
Discuss / Board
Q.347 Which among the following is known as 'Fool's Gold'?
A iron pyrite
B copper sulphate
C silver nitrate
D zinc oxide
Discuss / Board
Q.348 Which among the following is the 'Most Poisonous' gas?
A carbon dioxide
B carbon monoxide
C nitrogen dioxide
D sulphur dioxide
Discuss / Board
Q.349 What is the common name of 'Borax'?
A sodium borate
B sodium carbonate
C potassium nitrate
D calcium sulphate
Discuss / Board
Q.350 Which among the following is used as a 'Cleaning Agent' for glass?
A ammonia
B methanol
C acetone
D vinegar
Discuss / Board
Q.351 Which among the following is used in 'Bulletproof Jackets'?
A nylon-6
B kevlar
C polystyrene
D bakelite
Discuss / Board
Q.352 Which among the following is used to 'Denature' alcohol?
A methanol
B ethanol
C propanol
D butanol
Discuss / Board
Q.353 Which among the following is known as 'Heavy Hydrogen'?
A protium
B deuterium
C tritium
D helium
Discuss / Board
Q.354 Which among the following is used in 'Nuclear Medicine' to study kidney function?
A iodine-131
B technetium-99m
C carbon-11
D oxygen-15
Discuss / Board
Q.355 What is the primary constituent of 'Pearl'?
A calcium sulphate
B calcium carbonate and magnesium carbonate
C silicon dioxide
D sodium chloride
Discuss / Board
Q.356 Which among the following is used in 'Making' permanent magnets?
A soft iron
B steel
C aluminum
D copper
Discuss / Board
Q.357 Which among the following is used in 'Artificial Heart' valve?
A teflon
B nylon
C pyrolytic carbon
D bakelite
Discuss / Board
Q.358 Which among the following is the 'Source of Energy' in nuclear power plants?
A nuclear fusion
B nuclear fission
C radioactive decay
D chemical reaction
Discuss / Board
Q.359 Which of the following describes the 'Goldstein's Experiment' result?
A discovery of electrons
B discovery of protons
C discovery of neutrons
D discovery of the nucleus
Discuss / Board
Q.360 Which among the following elements has the highest second ionization enthalpy?
A lithium
B beryllium
C boron
D carbon
Discuss / Board

Master Chemistry set 1 for All Competitive Exams 2026

Practicing Chemistry set 1 MCQs is one of the most effective ways to prepare for competitive examinations in 2026. This topic-wise question bank contains carefully selected multiple-choice questions designed to strengthen conceptual understanding, improve accuracy, and enhance problem-solving speed. Our collection includes beginner, intermediate, and advanced-level questions frequently asked in JKSSB, SSC, Banking, Railway, Police, Defence, State PSC, and various national-level examinations. Every question is structured to reflect real exam patterns and helps candidates become familiar with objective-type assessment formats. Instant answer verification enables students to identify mistakes immediately and learn the correct approach without wasting valuable preparation time. Regular practice of topic-wise MCQs improves retention, reinforces key concepts, and develops confidence required to perform well under exam pressure. Whether you are revising important concepts, preparing for an upcoming recruitment test, or strengthening weak areas, these practice questions provide a reliable platform for continuous improvement. Consistent participation in MCQ-based learning sessions can significantly increase your chances of achieving higher scores and better ranks in competitive examinations.

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