As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what...? Mcqs

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As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what...?

(A) “coma” around the comet’s nucleus and a long tail that points away from the sun
(B) “coma” that points away from the sun and a long tail around the comet’s nucleus

(C) Only “coma” around the comet’s nucleus
(D) Only a long tail that points away from the sun

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If a child has cholera, which environment pollution needs to be addressed...?

(A) Land
(B) Water

(C) Air
(D) None

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Which one of the following is oxidizing agent...?

(A) Al
(B) H2S

(C) Cl2
(D) NaH

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The electronic device which is used as a switch or amplifier is called ...?

(A) Diode
(B) Resistor

(C) Transistor
(D) Transformer

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The life sustaining envelop of earth is _____...?

(A) Biomass
(B) Biomes

(C) Biosphere
(D) Atmosphere

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What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ...?

(A) Radium dating
(B) Uranium dating

(C) Carbon dating
(D) Deuterium dating

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The additional circular small piece of DNA in bacterial cell is called ____...?

(A) Plasmids
(B) Replica

(C) Template
(D) Clone

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A burning candle is an example of ______ state of matter....?

(A) Gas
(B) Liquid

(C) Solid
(D) All three

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Which of the following is an example of wheel and axle...?

(A) Car Steering
(B) Knife

(C) Seesaw
(D) Bottle opener

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How many ounces in a kg...?

(A) 28
(B) 30

(C) 33
(D) 35

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