Chemistry Questions with Answers Set 2

Question 1. In a common dry cell, electrolyte is____.

(A) Manganese dioxide

(B) Ammonium chloride

(C) Sulphuric acid

(D) Zinc

Question 2. The energy, found in dry cell is_____.

(A) Electromagnetic

(B) Chemical

(C) Electric

(D) Mechanic

Question 3. Which one of the following solutions of electrolytes is used in the car battery?

(A) Potassium nitrate

(B) Sulphuric acid

(C) Nitric acid

(D) Sodium sulphate

Question 4. Which one of the following pairs of materials serve as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers etc.? 

(A) Iron and Cadmium

(B) Lead peroxide and Lead

(C) Zinc and Carbon

(D) Nickel and Cadmium

Question 5. Which one of the following pairs is correctly matched?

(A) Ozone depletion – Skin cancer

(B) Methyl isocyanate – Acid rain

(C) Fluoride pollution – Bhopal gas
tragedy

(D) Sulphur dioxide – Teeth

Question 6. In dry cell, which of the following are used as electrolytes?

(A) Ammonium Chloride and Calcium Chloride

(B) Magnesium Chloride and Zinc Chloride

(C) Sodium Chloride and Calcium Chloride

(D) Ammonium Chloride and Zinc Chloride

Question 7. Which one of the following is incorrect?

(A) Telephone was invented by Graham Bell

(B) Dry ice is nothing but solid Carbon dioxide

(C) The breaking apart of the nucleus of an atom is called fusion

(D) Theory of evolution was propounded by Charles Darwin

Question 8. Smokescreen is used in warfare for the purpose of concealment and camouflage. Smoke screens generally consists of fine particles of______.

(A) Magnesium oxide dispersed in air

(B) Titanium oxide dispersed in air

(C) Silver iodide dispersed in air

(D) Sodium chloride dispersed in air

Question 9. Liquid oxygen or liquid hydrogen is used technology in obtaining the industrial level called_____.

(A) Cryogenics

(B) Hydroponics

(C) Pyrometry

(D) Pyrotechnics

Question 10. Which one of the following concerns soil? 

(A) Topography

(B) Biotic

(C) Climatic

(D) Edaphic

Question 11. Which chemical acts as a reclamation agent for alkaline soil?

(A) Calcium Carbonate

(B) Calcium Oxide

(C) Calcium Sulphate

(D) None of the above

Question 12. In India, water desalination plant is located in_____.

(A) Chennai

(B) Cuttack

(C) Goa

(D) Lakshadweep

Question 13. Where was the first desalination plant in India to produced one lakhs litres fresh water per day based on low temperature thermal desalination principle commissioned?

(A) Valsad

(B) Mangalore

(C) Port Blair

(D) Kavaratti

Question 14. Carbon Nanotubes (CNTs) were prepared by_____.

(A) Raman

(B) Faraday

(C) Iijima

(D) Fuller

Question 15. When kept in air and darkness, which of the following elements glows spontaneously?

(A) Violet phosphorus

(B) Scarlet phosphorus

(C) White phosphorus

(D) Red phosphorus

Question 16. Which one of the following is used for manufacturing safety matches?

(A) Scarlet phosphorus

(B) Red phosphorus

(C) Black phosphorus

(D) Di-phosphorus

Question 17. Which of the following main elements is used in making matchbox? 

(A) Sodium

(B) Silicon

(C) Phosphorus

(D) Graphite

Question 18. Which of the following pairs are not correctly matched?

(A) Uranium – Atom bomb

(B) Hydrochloric acid – Accumulate cell

(C) Manganese dioxide – Dry cell

(D) Potassium Chlorate – Matchbox

Question 19. Which one of the following colours is supplied by Sodium Chromate?

(A) Black

(B) Green

(C) Red

(D) Blue

Question 20. ‘Red Ink’ is prepared from_____.

(A) Eosin

(B) Congo red

(C) Aniline

(D) Phenol

Question 21. Which is used in Dry Washing?

(A) All of these

(B) Alcohol

(C) Benzene

(D) Petrol

Question 22. Chemically ‘Vermillion’ is_____.

(A) Sodium Chloride

(B) Mercuric Sulphide

(C) Potassium Nitrate

(D) Calcium Carbonate

Question 23. Which one of the following is not correctly matched?

(A) Zinc – Galvanization

(B) Silver – Electric bulb

(C) Uranium – Atom bomb

(D) Magnesium – Fireworks

Question 24. Which one of the following is called the ‘metal of future’?

(A) Aluminium

(B) Titanium

(C) Iron

(D) Copper

Question 25. Methane is present in the atmosphere of______.

(A) Mars

(B) Jupiter

(C) Sun

(D) Moon

Question 26. A team of scientists at Brookhaven National Laboratory including those from India created the heaviest anti-matter (antihelium nucleus). What is/are the implication/implications of the creation of anti-matter?

1. It will make mineral prospecting and oil exploration easier and cheaper.
2. It will help the possibility of the existence of stars and galaxies made of anti-matter.
3. It will help to understand the evolution of the universe.
   

Select the correct answer using the codes given below. 

(A) 1, 2 and 3

(B) Only 3

(C) 2 and 3

(D) Only 1

Question 27. Match List-I with List-II and select the correct answer using the code given below the lists.

Code

Question 28. Match List-I with List-II and select the correct answer using the code given below the lists.

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Question 29. Match List-I with List-II and select the correct answer using the code given below the lists.

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Question 30. Match List-I with List-II and select the correct answer using the code given below the lists.

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Question 31.

• Assertion (A): A dry cell cannot be charged.
  
• Reason (R): Dry cell has a reversible reaction.
  

Code

(A) (A) is false, but (R) is true

(B) (A) is true, but (R) is false

(C) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

(D) Both (A) and (R) are true and (R) is the correct explanation of (A)

Question 32. Match List-I with List-II and select the correct answer using the code given below the lists.

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Question 33. Match List-I with List-II and select the correct answer using the code given below the lists.

Code

Question 34. Consider the following pairs. Commonly Unwanted or used/ controversial Consumed chemicals materials likely to be found in them:

1. Lipstick – Lead
   
2. Soft drinks – Brominated vegetable oils
   
3. Chinese – Monosodium   fast food glutamate
   

Which of the pairs given above is/ are correctly matched?

(A) 1, 2 and 3

(B) Only 1 and 3

(C) Only 2 and 3

(D) Only 1