Humans can hear in the range of ______ to _______Hertz (Hz)....? Mcqs

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Humans can hear in the range of ______ to _______Hertz (Hz)....?

(A) 10 Hz to 10,000 Hz.
(B) 20 Hz to 20,000 Hz.

(C) 30 Hz to 30,000 Hz.
(D) 40 Hz to 40,000 Hz.

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Cancer can be treated by ___________...?

(A) Antibiotics & vaccines
(B) Radiotherapy & antibiotics

(C) Chemotherapy & radiotherapy
(D) Antibiotics & Chemotherapy

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Living organisms which derive their food from dead and decaying organic materials called...?

(A) Saprotrophs
(B) Parasites

(C) Predators
(D) Producers

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A (an) ______ is a pure substance which contains only one type of molecule made up of atoms of more than one element....?

(A) Compound
(B) Element

(C) Molecule
(D) Atom

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Cusec is a unit of _________...?

(A) Area
(B) Time

(C) Distance
(D) mass

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Which bird has legs but can’t walk ...?

(A) Loons
(B) Grebes

(C) Hummingbirds
(D) None of these

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10% (w/w) sugar solution mean that 10 grams of solute dissolved in...?

(A) 90g of water
(B) 95g of water

(C) 100g of water
(D) 105g of water

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A slow-running pendulum clock can be speeded up by_______________...?

(A) Increasing the length of the rod
(B) Increasing the weight of the bob

(C) Reducing the length of the rod
(D) Reducing the weight of the bob

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Periods in the periodic table are ____...?

(A) Vertical columns
(B) Horizontal rows

(C) Diagonal lines
(D) Blocks

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Which part of a bicycle dynamo spins to generate electricity...?

(A) Magnet
(B) Gear

(C) Axle
(D) Coils

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