Star gets denser and hotter ultimately changing into helium by process of ____...? Mcqs

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Star gets denser and hotter ultimately changing into helium by process of ____...?

(A) Nuclear fusion
(B) Nuclear Fission

(C) Radioactive decay
(D) Chemical reaction

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Uncertainty Principle was given by...?

(A) Werner Heisenberg
(B) Farady

(C) John locke
(D) None of these

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Which one of the following forms weak electrolyte solution with water...?

(A) CH₃COOH
(B) H₂SO₄

(C) NaCl
(D) None of these

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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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In modern periodic table, how many periods are there...?

(A) 7
(B) 8

(C) 9
(D) 6

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A rocket needs the speed of _______ to escape from earth’s gravity...?

(A) 22 miles per second
(B) 15 miles per second

(C) 12 miles per second
(D) 7 miles per second

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Melting Point of Tungsten is...?

(A) 1000 C
(B) 2000 C

(C) 3000 C
(D) 4000 C

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The electricity we used in our homes and schools is called...?

(A) Electric Potential (EP)
(B) Electric Resistance (ER)

(C) Direct Current (DC)
(D) Alternating Current (AC)

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What is used in making of alloys...?

(A) Gypsum
(B) Granite

(C) Chromium
(D) Lime-stone

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Animals without backbone are called...?

(A) Vertebrates
(B) Invertebrates

(C) Both A and B
(D) None of these

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