Water has been discovered on which potentially habitable super-Earth ...? Mcqs

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Water has been discovered on which potentially habitable super-Earth ...?

(A) K2-14d
(B) K2-15c

(C) K2-13a
(D) K2-18b

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If a rocket is launched with a velocity less than the escape velocity of Earth, it will:...?

(A) Escape the Earth’s gravitational field
(B) Enter into an elliptical orbit around the Earth

(C) Fall back to Earth
(D) Travel to another planet

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Which scientist established that the various form of energy mechanical, electrical and heat are basically the same and can be changed from one form into another...?

(A) John Dalton
(B) William Thomson

(C) Albert Einstein
(D) James Prescott Joule

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A substance which increases the efficiency of a catalyst is termed as:...?

(A) Promoter
(B) Activator

(C) Retarder
(D) Super catalyst

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The moon rotates on its axis in how many days...?

(A) 14.8 days
(B) 17.5 days

(C) 29.7 days
(D) 27.3 days

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Periscope is another optical instrument that works on the principle of total ____...?

(A) Refraction
(B) Diffraction

(C) External Reflection
(D) Internal Reflection

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Nucleus is responsible for cell division because it contains nuclear material called...?

(A) Mitochondria
(B) Ribosomes

(C) Lysosomes
(D) Chromosomes

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If nucleon number of potassium is 39, number of neutrons will be _______...?

(A) 39
(B) 19

(C) 20
(D) 29

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Which one from among the following seeds is monocot...?

(A) French Bean
(B) Maize

(C) Apple
(D) Orange

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The setting sun often looks oval in the shape because of__________...?

(A) The fact that sun really becomes oval in the evening
(B) Refraction of rays of sun passing through the atmosphere

(C) Optical Illusion
(D) Dispersion

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