The coil in a heater is made of
(A) Nichrome
(B) Tungsten
(C) Copper
(D) Iron
Thin wires can be pulled from a metal piece. For which property of the metal is it responsible?
(A) Tensile
(B) hardness
(C) Malignancy
(D) conductivity
In which process is a protective zinc coating applied on iron to prevent it from rusting?
(A) Galvanisation
(B) Annealing
(C) Smelting
(D) Welding
In which of the following classifications are the elements arranged in the order of their increasing atomic number?
(A) The Modern Periodic Table
(B) Mendeleev's Periodic Table/
(C) Newland's Law of Octaves
(D) Dobereiner's Triads
Halogens are belonging to:
(A) Group17
(B) Group 8
(C) Group 18
(D) Group 7
Which of the below allotropes of carbon is in the form of geodesic globe?
(A) Fullerene
(B) Carbon nanotube
(C) Graphite
(D) Diamond
During uniform motion of an object along a straight line, its ___________ remains constant with time.
(A) acceleration
(B) velocity
(C) force
(D) deceleration
.______ is least reactive element belonging to group 17.
(A) Bromine
(B) Iodine
(C) Chlorine
(D) Fluorine
The catalyst is a substance through which the rates of chemical reactions ________.
(A) Decreases
(B) Changes
(C) Increases
(D) None of these
Which of the following has low density and low melting point?
(A) Na
(B) Fe
(C) Cu
(D) Au
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