A substance which increases the efficiency of a catalyst is termed as:...? Mcqs

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A substance which increases the efficiency of a catalyst is termed as:...?

(A) Promoter
(B) Activator

(C) Retarder
(D) Super catalyst

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The unit of Kc for reaction N2 + O2 ⇌ 2NO...?

(A) mol dm^-3
(B) mol^-2 dm^6

(C) mol^-1dm3
(D) No unit

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The average speed of a moving object during a given interval of time is always:...?

(A) the magnitude of its average velocity over the interval
(B) the distance covered during the time interval divided by the time interval

(C) one-half its speed at the end of the interval
(D) its acceleration multiplied by the time interval

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Asthma is due to the exposure to a type of environment pollution Which one...?

(A) Air
(B) Water

(C) Land
(D) None

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The Green House Effect is caused by an excess of ...?

(A) Carbon dioxide
(B) Carbon monoxide

(C) Carbon tetrachloride
(D) None of the above

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What is the process of artificial rain...?

(A) Cloud baring
(B) Cloud seeding

(C) Both A and B
(D) None

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Segmented Worms take breath through:_________...?

(A) Mouth
(B) Nose

(C) Moist Skin
(D) Head

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Where do most of Asteroids lie...?

(A) In asteroid belt between the orbits of Mars and Jupiter
(B) In asteroid belt between the orbits of Mars and Venus

(C) In asteroid belt between the orbits of Jupiter and Venus
(D) Everywhere in the sky

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The color that is least deviated by a prism ______...?

(A) Violet ray
(B) Red ray

(C) Green ray
(D) Yellow ray

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Friction can be reduced by changing from _________...?

(A) Rolling to sliding
(B) Sliding to rolling

(C) Dynamic to static
(D) Potential energy to kinetic energy

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