Chapter-wise MCQ Questions

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Question-1. Acid used in eye wash is

  1. carbonic acid
  2. acetic acid
  3. benzoic acid
  4. boric acid
Answer-1

Question-2. Acids are

  1. Sour in taste
  2. Sweet in taste
  3. salty in taste
  4. Bitter in taste
Answer-2

Question-3. Acids taste

  1. sour
  2. sweet
  3. bitter
  4. salty
Answer-3

Question-4. Ammonia that turns red litmus blue is:

  1. acidic
  2. basic
  3. neutral
  4. none of these
Answer-4

Question-5. Bases are

  1. Sour in taste
  2. Sweet in taste
  3. salty in taste
  4. Bitter in taste
Answer-5

Question-6. Blue litmus paper is dipped in a solution. It remains blue. What is the nature of solution ?

  1. Acid and base
  2. Base and neutral
  3. Acid apd neutral
  4. None of these
Answer-6

Question-7. Common salt is

  1. acidic
  2. basic
  3. neutral
  4. none of these
Answer-7

Question-8. Find the natural indicator from the following

  1. China Rose
  2. Vinegar
  3. Phenolphthalein
  4. Methyl Orange
Answer-8

Question-9. Give the chemical name of Lime water

  1. Calcium hydroxide
  2. Magnesium hydroxide
  3. Ammonium hydroxide
  4. Sodium hydroxide
Answer-9

Question-10. Give the chemical name of Milk of magnesia

  1. Calcium hydroxide
  2. Magnesium hydroxide
  3. Ammonium hydroxide
  4. Sodium hydroxide
Answer-10

Question-11. Give the chemical name of Window cleaner

  1. Calcium hydroxide
  2. Magnesium hydroxide
  3. Ammonium hydroxide
  4. Sodium hydroxide
Answer-11

Question-12. How will you classify the reaction between NaOH (aq) and HCl (aq)?

  1. Conbination
  2. Displacement
  3. Dissociation
  4. Neutralisation
Answer-12

Question-13. If the soil is too basic, it is treated with:

  1. quicklime
  2. salt
  3. organic matter
  4. water
Answer-13

Question-14. In neutralisation reaction:

  1. heat is absorbed
  2. heat is evolved
  3. neither heat is absorbed nor evolved
  4. none of these
Answer-14

Question-15. Litmus is extracted from

  1. curd
  2. grapes
  3. lichens
  4. cabbage
Answer-15

Question-16. Litmus paper (purple colour) in distilled water when added to an acid changes to

  1. Red
  2. Blue
  3. Green
  4. Violet
Answer-16

Question-17. Magnesium hydroxide is found in:

  1. soap
  2. lime water
  3. milk of magnesia
  4. vegetable
Answer-17

Question-18. Neutralisation is a reaction between

  1. two acids
  2. two bases
  3. one acid and one base
  4. one acid and one neutral substance
Answer-18

Question-19. Neutralisation reactioñ is a

  1. physical and reversible change
  2. physical and irreversible change
  3. chemical and reversible change
  4. chemical and irreversible change
Answer-19

Question-20. On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?

  1. Basic
  2. Either acidic or basic
  3. Either acidic or neutral
  4. Either basic or neutral
Answer-20

Question-21. Phenolphthalein gives….....................colour in acid medium

  1. Pink
  2. Colourless
  3. Green
  4. Red
Answer-21

Question-22. Process in which acids and bases react to form salt and water is called

  1. neutralisation
  2. hydrogenation
  3. sublimation
  4. all of these
Answer-22

Question-23. The acid that our stomach releases is:

  1. sulphuric acid
  2. nitric acid
  3. hydrochloric acid
  4. formic acid
Answer-23

Question-24. The effect of sting of an ant can be neutralised by rubbing with

  1. Calcium carbonate
  2. Sodium Carbonate
  3. Sodium hydrogen carbonate
  4. Calciumchloride
Answer-24

Question-25. The most commonly used natural indicator is

  1. turmeric
  2. beetroot
  3. China rose petal
  4. litmus
Answer-25

Question-26. The nature of bases is

  1. acidic
  2. basic
  3. neutral
  4. all of these
Answer-26

Question-27. The solutions which do not change the colour of either red or blue litmus are known as

  1. Acid Solutions
  2. Base Solutions
  3. Neutral Solutions
  4. indicator
Answer-27

Question-28. The sting of an ant contains

  1. Hydrochloric acid
  2. Formic acid
  3. sulphuric acid
  4. Ethanoic acid
Answer-28

Question-29. The substances that are used to test whether a substance is acidic or basic is called

  1. Indicator
  2. Acid
  3. Base
  4. Salt
Answer-29

Question-30. Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed.

  1. Yellow in both acid and base
  2. Yellow in acid and red in base
  3. Pink in acid and yellow in base
  4. Red in acid and blue in base
Answer-30

Question-31. When CO2 gas is passed through limewater, it turns milky. Which of the following compounds is responsible for this milkiness ?

  1. Calcium oxide
  2. Calcium chloride
  3. sodium carbonate
  4. Calcium carbonate
Answer-31

Question-32. When phenolphthalein is added to a acidic solution, it gives

  1. pink colour
  2. red colour
  3. blue colour
  4. no colour
Answer-32

Question-33. When we suffer from acidity, we should take

  1. iron tonic
  2. vitamins
  3. antacid
  4. lactocalamine
Answer-33

Question-34. Which feels soapy on touch ?

  1. Acids
  2. Bases
  3. Both (a) and (b)
  4. None of these
Answer-34

Question-35. Which of the following substances makes the fruits soun

  1. Acids
  2. Salts
  3. Bases
  4. None of these
Answer-35

Question-36. Which of the following turns colourless solution of phenol¬phthalein into pink solution ?

  1. Salt
  2. Base
  3. Acid
  4. All of these
Answer-36



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