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Question 1. The symbols used to denote different elements are generally the first or the first two letters of the name by which the particular element is commonly known. Which of the following elements do not fall in this category?


(a) Osmium


(b) Tungsten


(c) Silver


(d) Antimony
  1.    (a), (b) and (c)
  2.    (a), (b) and (d)
  3.    (b), (c) and (d)
  4.    (a), (c) and (d)
Answer: Option C
: C

Option:(c)

Question 2. Match List I and List II and select the correct answer by using the codes given below.


List I                            List II


A. Butadiene           1. Match industry


B. Lead tetraethyl  2. Dye industry


C. Phosphorus        3. Rubber industry


D. Aniline                4. Petroleum industry
  1.    1    2    3    4
  2.    2     1    4    3
  3.    3    4    1   2
  4.    3   2   1   4
Answer: Option C
: C

Option: (c)

Question 3. Consider the following statements


(a) Copper


(b) Gold


(c) Platinum


(d) Silver


Which of the above elements exist free in nature?
  1.    (a) and (b)
  2.    (b) and (c)
  3.    (a), (b) and (d)
  4.    (c) and (d)
Answer: Option B
: B

Option:(b)

Question 4. Match List I and List II and select the correct Answer by using the codes given below lists.


List I                               List II


(Drugs/Chemicals)  (Their Uses)


A. Atropine              1. Local anaesthesia


B. Ether                    2. Heart trouble


C. Nitroglycerine    3. Dilation of pupil


D. Pyrethrin            4. Mosquito control
  1.    1   2    3   4
  2.    1   3   4   2
  3.    3    1   4   2
  4.    3   1   2   4
Answer: Option D
: D

Option:(d)

Question 5. Match List I and List II and select the correct answer by using the codes given below.


List I (Type of Mixture)                            List II (Method of Separation)


A. Insoluble solid and liquid                  1. Distillation


B. Two immiscible liquids`                     2. Evaporation


C. Soluble solid and liquid                      3. Use of separating


D. Completely miscible liquids              4. Decantation
  1.    1   2   3   4
  2.    2   3   4   1
  3.    3   1   2   4
  4.    4   3   2   1
Answer: Option D
: D

Option:(d)

Question 6. Consider the following statements


(a) Baking soda is used in fire extinguishers


(b) Quicklime is used in the manufacture of glass


(c) Gypsum is used in the manufacture of Plaster of Paris


Which of the statements given above is/are correct?
  1.    (a) and (b)
  2.    (b) and (c)
  3.    (a) only
  4.    (a), (b) and (c)
Answer: Option D
: D

Option:(d)