During winter in cold countries, the __________ is mixed to melt the ice on the icy roads....? Mcqs

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During winter in cold countries, the __________ is mixed to melt the ice on the icy roads....?

(A) Salt
(B) Chlorine

(C) Carbon dioxide
(D) Water

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The sunlight can reach a depth of___________meters in the ocean...?

(A) 80
(B) 200

(C) 120
(D) None

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The maximum mass of an atom is concentrated in _____...?

(A) Electron
(B) Proton

(C) Neutron
(D) Nucleus

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A force of 15 N makes an angle of 60° with horizontal. Its vertical component will be ____...?

(A) 15 N
(B) 10 N

(C) 13 N
(D) 7 N

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A bird sitting on a high tension electric wire does not get electrocuted because:...?

(A) Sit has high resistance
(B) the body is earthed

(C) it does not form a closed path for the flow of current
(D) its feet are good insulators

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Which of the following is the reason of global warming...?

(A) Presence of sulphite
(B) Rise in CO2 concentration

(C) Oxides of nitrogen
(D) Formtion of ozone

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Diffusion is a _____ process, which does not require energy input....?

(A) Active
(B) Fast

(C) Passive
(D) Slow

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The only non metal exists in liquid state is ___________...?

(A) Mercury
(B) Bromine

(C) Phosphorus
(D) Iodine

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lightest metal is__________...?

(A) Lithium
(B) Sodium

(C) Magnesium
(D) Aluminium

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Photosynthesis is the only process which produces free O2 by splitting _____...?

(A) Glucose
(B) Carbon Dioxide

(C) Chlorophyll
(D) Water

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