The hormone that increases the rate of heart beat and blood pressure after shock in a person is___________...? Mcqs

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The hormone that increases the rate of heart beat and blood pressure after shock in a person is___________...?

(A) Adrenalin
(B) Gastrin

(C) Thyroxin
(D) Pancreatic

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Which of the following atmospheric layers help in radio communication...?

(A) Exosphere
(B) Ionosphere

(C) Troposphere
(D) Stratosphere

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On the Moon, the escape velocity is: __________...?

(A) Less than on Earth due to its lower mass and smaller radius
(B) More than on Earth due to its smaller radius

(C) The same as on Earth because escape velocity is a constant
(D) Dependent on the time of day

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In 2013, Planck measured the age of the universe at ___________...?

(A) 13.82 billion years
(B) 4.53 billion years

(C) 4.6 billion years
(D) 4.53 billion years

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In plants, which part transports sugar produced in the leaves to all parts of plants...?

(A) Phloem
(B) Xylem

(C) Stomata
(D) Roots

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Refrigerator works on the phenomenon of ________ of heat transfer....?

(A) Conduction
(B) Convection

(C) Radiation
(D) All of these

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What is the escape velocity on Earth...?

(A) 7.9 km/s
(B) 9.8 km/s

(C) 11.2 km/s
(D) 12.4 km/s

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Which of the following gas mainly responsible for ozone layer depletion...?

(A) Chlorofluorocarbon
(B) CO2

(C) Nitrogen oxide
(D) Sulphur dioxide

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One calorie is equal to how many joules...?

(A) 4184 joules
(B) 4285 joules

(C) 4286 joules
(D) 4185 joules

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Weigh of a body can be measured using a spring balance, it differs from place to place because of variation in ______...?

(A) Acceleration
(B) Gravitational pull

(C) Velocity
(D) Size of spring balance

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