201 Q) Which one among the following metals is used in fireworks to make a brilliant white ligh
(a) Sodium
(b)Magnesium
(c) Aluminium
(d)Silver
202 Q) Match the Following
|
(Item)
|
(Toxic substance)
|
|
A.
CFL lamp
|
1.
Nitrogen oxide
|
|
B.
Automobile battery
|
2.
Phthalates
|
|
C.
Polymer
|
3.
Lead
|
|
D.
Diesel engine
|
4.
Mercury
|
(a) 2 4 3 1
(b) 2 3 4 1
(c) 4 3 2 1
(d) 4 2 3 1
203 Q) "Consider the following statements
I. CFLs have a life expectancy of 10000 hrs if used 3 hrs per day.
II.CFLs help in reducing global warming.
III.CFLs contain mercury which is very harmful to living beings.
IV. CFLs should be disposed of properly and recycled.
Which of the statements given above are correct?"
(a) I, II, III and IV
(b) I, II and III
(c) II, III and IV
(d) III and IV
204 Q) The quality of diesel oil for use in diesel engines is determined by the
(a)composition of the oil
(b)octane number
(c)cetane number
(d)amount of additives added
205 Q) Which of the following proteins has structural as well as enzymatic property?
(a) Collagen
(b) Actin
(c) Dynein
(d) Nexin
206 Q) "Consider the following compounds with the reference to constituent of dettol
I. Chloroxylenol
II. Terpineol
Which of the compounds given above is/are correct?"
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II
207 Q) Which one of the following is the important ore of magnesium?
(a) Cassiterite
(b)Malachite
(c) Camalite
(d)Galena
208 Q) The elements of a group in the periodic table
(a) have similar chemical properties
(b) have consecutive atomic numbers
(c) are isobars
(d) are isotopes
209 Q) Nail polish remover contains
(a) benzene
(b)formaldehyde
(c) acetic acid
(d)acetone
210 Q) Misch metal is widely used in the manufacture of which of the following?
(a)Material of car break
(b)Smoke detectors
(c)Cigarette lighter
(d)Emergency lighter
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