Chemistry GK MCQ Questions SET-5 with Answers free PDF Download

We have provide GK MCQ Questions for Chemistry GK questions with Answers free PDF. Download based on the important concepts and topics given in the textbook as per new exam pattern. All these Chemistry GK MCQs Multiple Choice Questions with Answers provided here with detailed solutions. Use them as reference and be confident in the actual exam by practicing the MCQ Quiz Questions of Chemistry GK as much as you can. Each question has four options followed by the right answer.

MCQ Questions for Chemistry GK with Answers

Q1. The metal that is usually extracted from sea water is

(i) Ca
(ii) Na
(iii) K
(iv) Mg

(iv) Mg

Q2. The chief source of naphthalene is

(i) Coal-tar
(ii) Diesel
(iii) Charcoal
(iv) Camphor

(i) Coal-tar

Q3. Terylene is a condensation polymer of ethylene glycol and which acid?

(i) Benzoic Acid
(ii) Salicylic acid
(iii) Phthalic acid
(iv) Terephthalic acid

(iv) Terephthalic acid

Q4. Atoms of same element having different mass numbers are called________

(i) Isobars
(ii) Isotopes
(iii) Isotones
(iv) Isomers

(ii) Isotopes

Q5. For generation of biogas, the materials commonly used are

(i) Animal wastes
(ii) Crop residues
(iii) Aquatic plants
(iv) Forest residues

(i) Animal wastes

Q6. Iron and manganese present as pollutants in water cannot be removed by________

(i) Oxidation followed by settling and filtration
(ii) Chlorination
(iii) Ion exchange process
(iv) Lime soda process or manganese zeolite process

(ii) Chlorination

Q7. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

(i) Hydrogen
(ii) Oxygen
(iii) Carbon dioxide
(iv) All of them

(iii) Carbon dioxide

Q8. Which of the following elements is not present in stainless steel?

(i) Iron
(ii) Tungsten
(iii) Chromium
(iv) Nickel

(ii) Tungsten

Q9. The most reactive among the halogens is

(i) Fluorine
(ii) Chlorine
(iii) Bromine
(iv) Iodine

(i) Fluorine

Q10. Laughing gas is

(i) Nitric oxide
(ii) Nitrous oxide
(iii) Nitrogen trioxide
(iv) Nitrogen pentoxide

(ii) Nitrous oxide

Q11. The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

(i) p-electrons in Ne(Z = 10)
(ii) s-electrons in Mg(Z = 12)
(iii) d-electrons in Fe(Z = 26)
(iv) p-electrons in CI(Z = 17)

(iv) p-electrons in CI(Z = 17)

Q12. An example of heterocyclic compound is

(i) Naphthalene
(ii) Furan
(iii) Benzene
(iv) Anthracene

(ii) Furan

Q13. When there are two electrons in the same orbital, they have:

(i) Same spin
(ii) Opposite spin
(iii) Same or opposite spin
(iv) No spin

(ii) Opposite spin

Q14. Which of the following vitamins is generally excreted by human in urine?

(i) Vitamin B
(ii) Vitamin C
(iii) Vitamin D
(iv) None of these

(iv) None of these

Q15. The coordination number of body centered atom in cubic structure is

(i) 4
(ii) 6
(iii) 8
(iv) 10

(iii) 8

Q16. Which of the following is emitted in Beta-decay process?

(i) Electron
(ii) Positron
(iii) Both (i) and (ii)
(iv) None of Above

(iii) Both (i) and (ii)

Q17. Which of the following quantum numbers is not necessary to identify an orbital?

(i) Principal quantum number
(ii) Azimuthal quantum number
(iii) Magnetic quantum number
(iv) Electron Spin quantum number

(iv) Electron Spin quantum number

Q18. Which of the following quantum number determines the number of sub-shells?

(i) Electron spin quantum number
(ii) Principal quantum number
(iii) Magnetic quantum number
(iv) Azimuthal quantum number

(iv) Azimuthal quantum number

Q19. Which of the following is correct about the principal quantum number?

(i) It determines the size of the orbital
(ii) It can have positive integer values
(iii) It identifies the shell
(iv) All of the above

(iv) All of the above

Q20. Which of the following is not an ore of Zinc?

(i) Sphalerite
(ii) Zincite
(iii) Calamine
(iv) Carnetite

(iv) Carnetite

Q21. What is the multiplication factor when the nuclear reactor is said to be critical?

(i) 0
(ii) 1
(iii) 2
(iv) 10

(ii) 1

Q22. What will be the number of neutrons in an atom having atomic number 35 and mass number 80?

(i) 35
(ii) 45
(iii) 55
(iv) 80

(ii) 45

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