Enzyme changes in pH can cause enzymes to ______...? Mcqs

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Enzyme changes in pH can cause enzymes to ______...?

(A) Denature
(B) Activate

(C) Inhibit
(D) Stabilize

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The gases used in different types of welding would include ___________...?

(A) Oxygen and hydrogen
(B) Oxygen, hydrogen, acetylene and nitrogen

(C) Oxygen, acetylene and argon
(D) Oxygen and acetylene

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Rainbow is formed due to ______...?

(A) Emission of light
(B) Absorption of light

(C) Refraction of light
(D) Transmission of sound

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Which isotope is used to determine the accumulation rates of pollutants in layers of soil...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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The floral part that produces pollen grains is:...?

(A) Sepal
(B) Petal

(C) Anther
(D) Ovary

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Addition reaction is also known as ____...?

(A) Combination Reaction
(B) Synthesis Reaction

(C) Decomposition Reaction
(D) Both A and B

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Air pollution is caused by...?

(A) Solid
(B) Liquid

(C) Gases
(D) All of these

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The presence of a magnetic field can be detected by _______...?

(A) Small mass
(B) Stationary positive charge

(C) Stationary negative charge
(D) Magnetic compass

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When Earth is between the Moon and the Sun, this forms a shadow of the Earth, and the Moon passes through this shadow of the Earth, causing a ______...?

(A) Solar Eclipse
(B) Lunar Eclipse

(C) Moon Shadow
(D) Earth Shadow

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Which type of reaction produces the most harmful radiation...?

(A) Fusion reaction
(B) Fission reaction

(C) Chemical reaction
(D) Photo-Chemical reaction

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