The earth revolves around the sun at a speed of__________...? Mcqs

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The earth revolves around the sun at a speed of__________...?

(A) 18.5 km/sec
(B) 26.6 km/sec

(C) 29 km/sec
(D) 31.9 km/sec

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The coolest stars are the red stars and their temperature is around ____...?

(A) 2000°C
(B) 3000°C

(C) 4000°C
(D) 5000°C

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Evaporation can occur at ____...?

(A) Freezing point
(B) Melting point

(C) Boiling point
(D) All temperatures

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______ structures have different functions (physiology) but having similar internal architecture....?

(A) Analogous
(B) Homologous

(C) Vestigial
(D) Rudimentary

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Final step of the scientific method is developing...?

(A) Hypothesis
(B) Research

(C) Conclusion
(D) Observation

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Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________...?

(A) ionic substances
(B) metallic substances

(C) molecular solids
(D) covalent network solids

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Deficiency of dietary protein, causes an imbalance in the gastro-intestinal system...?

(A) Marasmus
(B) Edema

(C) Diarrhea
(D) Kwashiorkor

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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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Percentage of water in an apple is__________...?

(A) 84%
(B) 90%

(C) 66%
(D) None of these

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The outermost layer of the sun is called __________...?

(A) Coach
(B) Core

(C) Corona
(D) Comma

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