Deforestation will decrease...? Mcqs

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Deforestation will decrease...?

(A) Soil erosion
(B) Rainfall

(C) Landslides
(D) Soil fertility

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Ten identical steel balls, each with a mass of 27 g, are immersed in a measuring cylinder initially containing a certain volume of water. The water level rises by 50 cm³ after immersing the balls. What is the density of the steel...?

(A) 0.90 gm/cm^3
(B) 8.1 gm/cm^3

(C) 9.0 gm/cm^3
(D) 13.5 gm/cm^3

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Preservatives are used to preserve _______...?

(A) Acids
(B) Bases

(C) Food
(D) Water

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The deficiency of vitamin K causes ________ ...?

(A) Loss of appetite
(B) Scurvy

(C) Sterility
(D) Blood clotting disorder

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Vitamin B1 is also known as____________...?

(A) Riboflavin
(B) Retinol

(C) Thiamine
(D) Niacin

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There is no connection of supernova explosion with___________...?

(A) Cosmic rays
(B) Pulsars

(C) The formation of heavy elements
(D) Quasars

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The luster of diamond is due to_________...?

(A) Reflection
(B) Total internal reflection

(C) Refraction
(D) None of these

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Which of the following food has lowest protein content...?

(A) Apples
(B) Watermelon

(C) Mango
(D) Peanut

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The depletion of ozone layer has been caused mainly by _____...?

(A) The release of industrial waste
(B) The deforestation of large area land

(C) The release of chlorofluorocarbons into the atmosphere
(D) None of these

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The repetition of property after a certain interval called ___________...?

(A) Electron efinity
(B) Atomic radius

(C) periodicity of property
(D) none of these

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