JMI PHD ENTRANCE Paper 2024 and Answer Key

66. Presence of which among the following minerals in Banana makes them slightly radioactive?

A. Sodium

B. Calcium

C. Magnesium

D. Potassium

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67. Which of the following is also known as wood alcohol?

A. Methanol

B. Ethanol

C. Propanol

D. Butanol

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68. Which of the following represents Reduction?

A. Losing one or more electrons

B. Gaining one or more electrons

C. Losing Hydrogen atoms

D. Liberating hydrogen gas

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69. The nuclear particle having no mass and no charge, but only spin is:

A. Proton

B. Neutrino

C. Meson

D. Electron

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70. Browning of paper in old books is caused by:

A. frequent use

B. lack of aeration

C. collection of dust

D. oxidation of cellulose

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