Alkenes ______...? Mcqs

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Alkenes ______...?

(A) Show the same general formula as alkynes
(B) Have carbon-carbon triple bond

(C) Have carbon-carbon double bond
(D) Are saturated hydrocarbons

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If a metal block applies a force of 20 N on an area of 5 cm2. Find the pressure being applied by the block on the area of _____ ...?

(A) 100 Ncm^-2
(B) 0.8 Ncm^-2

(C) 0.25 Ncm^-2
(D) 4 Ncm^-2

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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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Which of the following has not involuntary muscles...?

(A) Bigestive System
(B) Blood Vessels

(C) Heart
(D) Brains

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Which of the following is the lightest substance...?

(A) Uranium
(B) Hydrogen

(C) Oxygen
(D) Nitrogen

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A___is a stiff bar that rests on a support called a fulcrum which lifts or move loads....?

(A) Pulley
(B) Wedge

(C) Screw
(D) Lever

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Newton's law of gravitation is consistent with Newton's _________ law of motion....?

(A) 1st
(B) 2nd

(C) 3rd
(D) All of them

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Communication satellites are in which orbit...?

(A) Geosynchronous
(B) Semi synchronous

(C) Geostationary
(D) None of these

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Earthquakes occur most frequently at __________...?

(A) Plate boundaries
(B) Plate surface

(C) Ocean beds
(D) All of the above

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What is the smallest unit of heredity...?

(A) Chromosomes
(B) Gene

(C) Nucleotides
(D) none

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