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Question 3787

Which of the following is not a property of heavy water ?

ABoiling point of heavy water is lower than that of ordinary water

Bdensity of heavy water is higher than that of ordinary water

Cfreezing point of heavy water is higher than that ordinary water

Dit produces corrosion

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A. Boiling point of heavy water is lower than that of ordinary waterExplanation not yet available.

Question 3786

Which one of the following is called the 'power house' of the cell ?

AGolgi body

BMitochondrion

CRibosome

DLysosome

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B. MitochondrionExplanation: Mitochondria are double-membraned organelles found in almost all eukaryotic cells. They are known as the 'power house of the cell' because they generate adenosine triphosphate (ATP) through the process of cellular respiration. The inner membrane forms folds called cristae, which increase the surface area for enzyme activity related to energy production. Mitochondria also contain their own DNA and ribosomes, enabling them to produce some of their own proteins. Key Reaction: Glucose + Oxygen → Carbon dioxide + Water + ATP

Question 3785

Plasma membrane in eukaryotic cells is made up of:

APhospholipid

BLipoprotein

CPhospholipo-protein

DPhospho-protein

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A. PhospholipidExplanation: The plasma membrane in eukaryotic cells is mainly made up of a phospholipid bilayer arranged in a fluid mosaic model. Each phospholipid molecule consists of a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tails. This arrangement creates a semi-permeable barrier that regulates the movement of substances into and out of the cell. Embedded proteins, cholesterol, and carbohydrates contribute to transport, signaling, and membrane stability.

Question 3784

One of the constitutes of tear gas is:

AEthane

BEthanol

CEther

DChloropicrin

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D. ChloropicrinExplanation not yet available.

Question 3783

A vitamin requires cobalt for its activity. The vitamin is:

AVitamin B12

Bvitamin D

Cvitamin B2

DVitamin A

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A. Vitamin B12Explanation: Vitamin B12, also known as Cobalamin, is the only vitamin that contains a metal ion — cobalt (Co) — at its core. It plays a crucial role in red blood cell formation, DNA synthesis, and proper nervous system function. Deficiency of Vitamin B12 leads to pernicious anemia and neurological disorders. It is found mainly in animal-based foods such as meat, eggs, milk, and fish, and is synthesized by certain bacteria.

Question 3782

Where is the Asiatic Wild Ass found?

ARann of Kutch

BKaziranga

CRanthambore

DPeriyar

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A. Rann of KutchExplanation not yet available.

Question 3781

Which one of the following Iron and Steel Plants was established with the British collaboration?

ABhilai

BRourkela

CBokaro

DDurgapur

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D. DurgapurExplanation not yet available.

Question 3780

The hill range that separates the state of Manipur from the state of Nagaland is known as:

AArakan hills

BPatkai hills

CBarail hills

DNaga hills

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C. Barail hillsExplanation not yet available.

Question 3779

In which State is the Guru Shikhar Peak located?

ARajasthan

BGujarat

CMadhya Pradesh

DMaharashtra

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A. RajasthanExplanation not yet available.

Question 3778

Ten Degree Channel is between:

AMinicoy and Maldives

BSouth Andaman and Little Andaman

CLittle Andaman and Car Nicobar

DMinicoy and Amindiv

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C. Little Andaman and Car NicobarExplanation not yet available.

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Which of the following is not a property of heavy water ?

Which one of the following is called the 'power house' of the cell ?

Plasma membrane in eukaryotic cells is made up of:

One of the constitutes of tear gas is:

A vitamin requires cobalt for its activity. The vitamin is:

Where is the Asiatic Wild Ass found?

Which one of the following Iron and Steel Plants was established with the British collaboration?

The hill range that separates the state of Manipur from the state of Nagaland is known as:

In which State is the Guru Shikhar Peak located?

Ten Degree Channel is between:

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