Chemistry Multiple Choice Questions Set – 53

Here you will find GK MCQ Questions for Chemistry GK with Answers PDF Free Download based on the important concepts and topics given in the textbook as per new exam pattern. This may assist you to understand and check your knowledge about the Chemistry GK. Students also can take a free test of the Multiple Choice Questions of Chemistry GK. Each question has four options followed by the right answer.

Question 1.

The metal ion present in Vitamin B12 is

A. Nickel
B. Cobalt
C. Iron
D. Zinc

Ans: B. Cobalt

Question 2.

During fermentation of sugar, the compound which is always formed is :

A. Methyl Alcohol
B. Ethyl Alcohol
C. Acetic Acid
D. Ethylene

Ans: B. Ethyl Alcohol

Question 3.

The chief constituent of vinegar is

A. Formic acid
B. Acetic acid
C. Salycylic acid
D. Oxalic acid

Ans: B. Acetic acid

Question 4.

The strongest acid of the following is

A. P-chlorophenol
B. M-nitrophenol
C. P-nitrophenol
D. O-nitrophenol

Ans: C. P-nitrophenol

Question 5.

The metal present in vitamin B12 is

A. Fe
B. Co
C. Mg
D. Mo

Ans: B. Co

Question 6.

If a buffer solution is diluted its pH

A. Is increased
B. Remains same
C. Is decreased
D. Will slowly increase and then it will decrease

Ans: B. Remains same

Question 7.

Vinegar made by fermentation from cane sugar contains

A. Palmitic acid
B. Lactic acid
C. Citric acid
D. Acetic acid

Ans: D. Acetic acid

Question 8.

Methanoic and ethanoic acids can be distinguished by the action of

C. Tollen’s reagent
D. SOCl2

Ans: C. Tollen’s reagent

Question 9.

Which of the following is not present in RNA

A. Thymine
B. Uracil
C. Ribose
D. Phosphate

Ans: A. Thymine

Question 10.

‘Vinegar’ is a commercial name of

A. Oxalic acid
B. Hydrochloric acid
C. Acetic acid
D. Citric acid

Ans: C. Acetic acid

Question 11.

Which one of the following is found in Vinegar ?

A. Acetic acid
B. Propionic acid
C. Formic acid
D. Butyric acid

Ans: A. Acetic acid

Question 12.

Which of the following alkali metals has highest specific heat?

A. Caesium
B. Rubidium
C. Potassium
D. Lithium

Ans: D. Lithium

Question 13.

The enzyme that converts glucose to ethyl alcohol is :

A. Invertase
B. Maltase
C. Zymase
D. Diastase

Ans: C. Zymase

Question 14.

The apparatus used to test acidity of aqueous solution is

A. PH meter
B. Ammeter
C. Hygrometer
D. Acidmeter

Ans: A. PH meter

Question 15.

Which of the following is not a derivative of barbituric acid?

A. Nembutal
B. Amytal
C. Veronal
D. Equanil

Ans: D. Equanil

Question 16.

Among the fuels given below, the one with highest calorific value is

A. Coke
B. Coal
C. Wood
D. Natural gas

Ans: D. Natural gas

Question 17.

The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

A. Amino phenyl alanine
B. Hydroxy phenyl alanine
C. Phenyl alanine
D. Dihydroxy phenyl alanine

Ans: D. Dihydroxy phenyl alanine

Question 18.

Which one of the following organic compound is used to remove stains of iron compounds?

A. Oxalic acid
B. Benzoic acid
C. Phthalic acid
D. Cinnamic acid

Ans: A. Oxalic acid

Question 19.

Which of the following substance’s smell is similar to Ethanoic acid?

A. Tomato juice
B. Kerosene
C. Vinegar
D. Lemon

Ans: C. Vinegar

Question 20.

Which of the following is the best fuel in terms of energy released per gram of fuel?

A. Hydrogen
B. Methane
C. Ethanol
D. Butane

Ans: A. Hydrogen

Chemistry GK MCQs all set

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