The primary colors of light are _____...? Mcqs

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The primary colors of light are _____...?

(A) 2
(B) 3

(C) 4
(D) 5

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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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Which colour of light is deviated least ________....?

(A) Red
(B) Blue

(C) Violet
(D) Green

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kilohertz (kHz) is a unit which measures...?

(A) Power used by a current of one ampere
(B) Electromagnetic radio wave frequencies

(C) Voltage
(D) Electric resistance

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__________ is the atmospheric layer wherein the weather occurs....?

(A) Troposphere
(B) Stratosphere

(C) Mesosphere
(D) Thermosphere

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Which type of wastes are classified as Non-biodegradable waste...?

(A) Waste from the plastic industry
(B) Vegetable waste from farms

(C) Kitchen waste from home
(D) None

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How does the Navstar GPS work for different applications (5)...?

(A) see the answer
(B) empty

(C) empty
(D) empty

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The snow on the mountains does NOT melt all at once when it is heated by the sun because:...?

(A) it becomes very hard
(B) it reflects most of the heat from the sun

(C) it has a low specific heat capacity
(D) it has a high latent heat of fusion

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Which of the following is caused by a deficiency of iron in the diet...?

(A) Giotre
(B) Scurvy

(C) Anaemia
(D) Rickets

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Deficiency of Vitamin-A results in __________...?

(A) Night blindness
(B) rickets

(C) scurvy
(D) hair fall

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