A glass chimney stops an oil lamp from smoking because:...? Mcqs

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A glass chimney stops an oil lamp from smoking because:...?

(A) It increases the supply of oxygen to the flame by convection
(B) The heat produced ensures complete

(C) Both to these
(D) Neither of these

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The example of stem which run horizontally on surface of soil to produce vegetatively...?

(A) Mint
(B) Ginger

(C) Onion
(D) Bryophyllum

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The audible range of normal bat ear is ______...?

(A) 20 Hz to 120 kHz
(B) 20 Hz to 20 kHz

(C) 20 kHz to 110 kHz
(D) 20 Hz to 50 KHz

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A pulsar is actually a___________...?

(A) Black hole
(B) White dwarf

(C) Red giant
(D) Neutron star

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Comets are made mostly of ______________...?

(A) Ice and dust
(B) Dust and lights

(C) Ice, dust and lights
(D) All of the above

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Which one of the following decreases along the period...?

(A) Ionization Energy
(B) Atomic Radius

(C) Electronegativity
(D) Electron Affinity

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Vitamin B3 is also known as__________...?

(A) Thiamine
(B) Riboflavin

(C) Niacin
(D) Retinol

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How many colors are there in Rainbow ...?

(A) 2
(B) 4

(C) 5
(D) 7

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The chemicals released from one cell and carried to signal some distant cell through blood are ______...?

(A) Neurotransmitters
(B) Enzymes

(C) Hormones
(D) All of these

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The splitting of white light into its component colours is called ____...?

(A) Refraction of light
(B) Reflection of light

(C) Dispersion of light
(D) Diffraction of light

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