Latest Most Important MCQs of Chemistry For Competitive Exam

Latest Most Important MCQs of Chemistry For Competitive Exam

These are most common and important MCQs, questions and answers of chemistry for upcoming exams.

Which one is right option about, Energy required to remove an electron from the outermost shell of an atom in its isolated gaseous state is-

• A)  Electron Affinity
• B)  Reducing Potential
• C)  Ionization Potential
• D)  Shell Potential

Right Answer:-  C

Do you know Which of the following is known as wood alcohol in following option- 

• A)  Methanol
• B)  Ethanol
• C)  Propanal
• D)  Butanol

Right Answer:-  A

Which one in following is popularly called Hypo- 

• A)  Silver Bromide
• B)  Silver nitrate
• C)  Sodium thiosulphate
• D)  Sodium phosphate

Right Answer:-  C

Which one options is correct in following scientists had discovered Radium-

• A)  Marie and Pierre Curie
• B)  Andre-Louis Debierne
• C)  Kasimir Fajans
• D)  Oswald Helmuth Gohring

Right Answer:-  A

Chemistry Handwritten Notes For Competitive Exams |Free PDF

Neutral solution has pH value of-

• A) 3
• B) 5
• C) 7.
• D) 14

Right Answer:-  C

Do you know, Each day human body breathe in  how many liters of air-

• A) 5,000 to 10,000
• B) 10,000 to 15,000
• C) 15,000 to 20,000.
• D) 20,000 to 25,000

Right Answer:-  C

Most abundant element in the universe is in following options-

• A) Hydrogen.
• B) Oxygen
• C) Carbon dioxide
• D) Silicon

Right Answer:-  A

Which one is correct substance which increases the rate of chemical reaction is-

• A) Metal
• B) Catalyst.
• C) Alloy
• D) Enzymes

Right Answer:-  B

In following options, Average human body contains how many grams of Sodium Chloride.

• A) 190
• B) 210
• C) 230
• D) 250.

Right Answer:-  D

Do you know, pH is an abbreviation for- 

• A) Power of Hydrogen.
• B) Possibility of Hydrogen
• C) Population of Hydrogen
• D) Position of Hydrogen

Right Answer:-  A

Find the thermosetting plastic from the Following options-

• A)  Polythene
• B)  Bakelite
• C)  Polyvincychloride
• D)  Casseine

Right Answer:-  B

IIT JEE, NEET JEE HANDWRITTEN NOTES PDF

‘Atoms can neither be created nor destroyed’ This principle was given by-- 

• A)  Avogadro
• B)  Dalton
• C)  Rutherford
• D)  Niels Bohr

Right Answer:-  B

Select the right option, ‘Oil of mirbane’ is the most common name of which in the following-

• A)  Phenol
• B)  Toluene
• C)  Phenolphthalein
• D)  Nitrobenzene

Right Answer:-  D

Which among the following is known as Quick Lime-

• A)  CaO
• B)  CaCO2
• C)  Ca(OH)2
• D)  CaCl2

Right Answer:-  A

Do you know Trimethylxanthine is chemical name of a stimulant which is found in tea and coffee. It’s the popular name is-

• A)  Thein
• B)  Caffeine
• C)  Theobromine
• D)  Theophylline

Right Answer:-  B

About how many Elements in the Periodic Table are Metals- 

• A) 45%
• B) 55%
• C) 60%
• D) 75%.

Right Answer:- D

Those substances which gives hydroxyl ions in water are called-

• A) Acid
• B) Base.
• C) Salts
• D) Alkalies

Right Answer:-  B

Which of the following is the most commonly used chemical for ripening of mangoes in India-

• A)  Potassium Iodide
• B)  Silver Iodide
• C)  Ammonium Nitrate
• D)  Calcium Carbide

Right Answer:-  D