61- ………..is a herbaceous plant which grows in the wild and stinging hairs of its leaves secrete methanoic acid in human body when touched accidentally.
(A)Ant sting
(B) Lotus
(C) Bettle
(D) Nettle
62- Methanoic acid can be treated by leaf of ………….
(A) Antacid
(B) Lime water
(C) Baking soda
(D) Dock plant which often beside the nettle.
63- Which of the following is naturally occurring acid’s Natural source?
- Acetic acid is naturally occurs in Vinegar.
- Citric acid normally found in Oranges and Lemon.
- Tartaric acid found in Tamarind.
- Tomato has oxalic acid.
- sour milk or curd contains Lactic acid.
(A) All are correct options
(B) Option 1, 2, 3 and 4 are correct
(C) Option 4 and 5 is correct
(D) None of the above
64- Methanoic acid found in
(A) Honey Bee sting
(B) Ant sting
(C) Nettle sting
(D) Both B and C
65- Salt formed by the combination of hydrochloric acid and sodium hydroxide solution is called ….
(A) Carbonate
(B) Sodium carbonate
(C) Sodium chloride
(D) None of the above
66- From where do we get sodium chloride?
(A) Minerals
(B) Rocks
(C) Sea water
(D) None of the above
67- What is the use of common salt?
(A) Used as sodium hydroxide
(B) Used as washing soda
(C) Bleaching powder
(D) All of the above
68-When a electricity is passed through an aqueous solution of sodium chloride it decomposes to form sodium hydroxide and this process is called
(A) Dry slaked lime process
(B) Chlor-alkali process
(C) Plaster of paris
(D) None of the above
69-………….gas is used for the manufacture of bleaching powder
(A) Carbonate
(B) Chloride
(C) Chlorine
(D) Sodium chloride
70- Bleaching powder is/are used in
(A) Cotton and linen industries
(B) Washing cloth industries
(C) Chemical industries
(D) All of the above
ANSWERS:
61-(D), 62-(D), 63-(A), 64-(B), 65-(C), 66-(C), 67-(D),68-(B), 69-(C), 70-(D)