Pluto is known as dwarf planet because which of the following reason/s:...? Mcqs

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Pluto is known as dwarf planet because which of the following reason/s:...?

(A) It has negligible mass
(B) It has not nearly round shaped

(C) It does not have always same neighbouring planet
(D) All of the above

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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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A movable pulley is used as ______...?

(A) Speed multiplier
(B) Force multiplier

(C) Direction changer
(D) Load reducer

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What is the range, in hertz, of the normal human hearing...?

(A) 10 Hz to 10 kHz
(B) 20 Hz to 20 kHz

(C) 2000Hz
(D) 40 Hz to 40 kHz

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The speed of sound in aluminium is _____...?

(A) 5620 m/s
(B) 6420 m/s

(C) 7220 m/s
(D) 4820 m/s

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____________ contains 75–80 % of the mass of the atmosphere....?

(A) Stratosphere
(B) Mesosphere

(C) Thermosphere
(D) Troposphere

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Elements which have same number of protons but different number of neutrons are called as _________ ...?

(A) Isotopes
(B) Isomers

(C) Allotropes
(D) Allomers

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Vitamin B3 is also known as__________...?

(A) Thiamine
(B) Riboflavin

(C) Niacin
(D) Retinol

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How many mm are there in 10 cm...?

(A) 100mm
(B) 200mm

(C) 50mm
(D) 10mm

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In which state of matter, the particles arrangement is irregular and less closely packed...?

(A) Solid
(B) Liquid

(C) Gas
(D) None

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