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Prisha Laxmi
@prisha-laxmi
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Joined: Mar 13, 2022
Last seen: May 1, 2022
Topics: 0 / Replies: 163
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Answer to: Which of the following is the major cause of global warming?

Correct answer: (b) re-radiation of I.R. rays by CO2 and H2O.

3 years ago
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Answer to: Which of the following is/are the hazardous pollutant(s) present in automobile exhaust gases?

Correct answer: (c) (ii) and (iv) Explanation: CO and oxides of Nitrogen are poisonous gases present in automobile exhaust gases.

3 years ago
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Answer to: Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal?

Correct answer: (c) SO2 and NO2 Explanation: SO2 and NO2 are responsible for the discoloured and lustureless nature of marble.

3 years ago
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Answer to: Soil is polluted by I. pesticides II. synthetic fertilizers III. green manure Choose the correct option.

Correct answer: (b) I and II Explanation: Pesticides and synthetic fertilizers pollute the soil.

3 years ago
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Answer to: Excess nitrate in drinking water can cause

Correct answer: (a) methemoglobinemia Explanation: Excessive concentration of nitrate in drinking water is harmful and can cause methemoglobinemia...

3 years ago
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Answer to: Which of the following statements about the depletion of ozone layer is correct?

Correct answer: (c) Freons, chlorofluorocarbons, are inert. Chemically, they do not react with ozone in stratosphere. Explanation: Freons and chlo...

3 years ago
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Answer to: Global warming is due to increase of: (a) methane and nitrous oxide in atmosphere. (b) methane and CO2 in atmosphere.

Correct answer: (b) methane and CO2 in atmosphere. Explanation: The main gas responsible for the global warming is carbon dioxide. Other contribut...

3 years ago
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Answer to: Which of the following acts as a sink for CO? (a) Plants (b) Haemoglobin

Correct answer: (c) Microorganisms present in the soil Explanation: CO is converted into CO2 by microorganism present in soil.

3 years ago
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Answer to: Which of the following statement is false? (a) London smog is oxidising in nature (b) Photochemical smog causes irritation in eyes

Correct answer: (a) London smog is oxidising in nature Explanation: London smog is reducing in nature.

3 years ago
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Answer to: Which of the following is essential for thyroid gland?

Correct answer: (b) I3 Explanation: Iodine is essential for thyroid gland.

3 years ago
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Answer to: Which hormone inhibits the release of growth hormone?

Correct answer: (c) Somatostatin Explanation: Hypothalamus produces two kinds of hormones: releasing hormone and inhibiting hormones. GnRH is rele...

3 years ago
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Answer to: Diurnal rhythm of the body is maintained by (a) melatonin (b) isthmus (c) PTH

Correct answer: (a) melatonin Explanation: Pineal gland secretes melatonin. It plays a very important role in the regulation of a 24-hour (diu...

3 years ago
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Answer to: Corpus luteum secretes (a) progesterone (b) estrogen (c) glucagon (d) vasopressin

Correct answer: (a) progesterone Explanation: After ovulation, ruptured follicle gets converted to corpus luteum which secretes progesterone.

3 years ago
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Answer to: PTH is called a hypercalcemic hormone because it leads to the

Correct answer: (c) increasing blood calcium levels Explanation: This is called so because PTH stimulates the reabsorption of calcium by the renal...

3 years ago
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Answer to: Match the columns. 1. PRL → A. Pigmentation of skin 2. LH → B. Steriod hormones 3. ACTH → C. Formation of milk

Correct answer: (a) 1-C, 2-D, 3-B, 4-A Explanation: Column I shows the names of hormones and column II shows the functions of the hormones.

3 years ago
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Answer to: Choose the incorrect statement. (a) Hormones are non-nutrient chemicals. (b) Exocrine glands are ductless glands.

Correct answer: (b) Exocrine glands are ductless glands. Explanation: Endocrine glands lacks ducts and are called as ductless glands.

3 years ago
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3 years ago
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