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6290 Questions Page 102 of 252
2526
Which one of the following is a useful functional association between fungi and the roots of higher plants?
UPSC Prelims 1999 General Science
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2527
When ants bite, they inject
UPSC Prelims 1999 General Science
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2528
Which one of the following agricultural practices is eco-friendly?
UPSC Prelims 1999 Environment
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2529
Strips of two metals A and B are firmly joined together as shown in the figure. On heating, A expands more than B does (coefficient of linear expansion $\alpha_A > \alpha_B$). If this joined strip is heated, then it will appear as
UPSC Prelims 1999 General Science
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2530
Endoscopy, a technique used to explore the stomach or other inner parts of the body is based on the phenomenon of
UPSC Prelims 1999 General Science
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2531
Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because
UPSC Prelims 1999 General Science
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2532
Lathyrism is caused by excessive consumption of
UPSC Prelims 1999 General Science
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2533
Consider the following statements:
I. If a person looks at a coin which is in a bucket of water, the coin will appear to be closer than it really is.
II. If a person under water looks at a coin above the water surface, the coin will appear to be at a higher level than it really is.

Which of the above statements is/are correct?
UPSC Prelims 1999 General Science
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2534
For which one of the following is capillarity not the only reason?
UPSC Prelims 1999 General Science
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2535
Which one of the following genetic diseases is sex-linked?
UPSC Prelims 1999 General Science
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2536
Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the lists:

List I (Physical Quantity)List II (Measurement Unit)
I. High speedA. Mach
II. WavelengthB. Angstrom
III. PressureC. Pascal
IV. EnergyD. Joule

Select the correct answer using the codes given below:
UPSC Prelims 1999 General Science
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2537
Consider the following statements regarding a motor car battery:
I. The voltage is usually 12 V.
II. Electrolyte used is hydrochloric acid.
III. Electrodes are lead and copper.
IV. Capacity is expressed in ampere-hour.

Which of the above statements are correct?
UPSC Prelims 1999 General Science
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2538
Indian farmers are unhappy over the introduction of "Terminator Seed Technology" because the seeds produced by this technology are expected to
UPSC Prelims 1999 General Science
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2539
Which one of the following scholars suggests the earth's origin from gases and dust particles?
UPSC Prelims 1999 Physical Geography
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2540
Match List I (Naturally occurring substances) with List II (Elements) and select the correct answer using the codes given below the lists:

List I (Substances)List II (Constituent Element)
I. DiamondA. Calcium
II. MarbleB. Silicon
III. SandC. Aluminium
IV. RubyD. Carbon

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UPSC Prelims 1999 General Science
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2541
Match List I (Drugs / Chemicals) with List II (Their uses) and select the correct answer using the codes given below the lists:

List I (Drug / Chemical)List II (Medical / Practical Application)
I. AtropineA. Local anaesthesia
II. EtherB. Heart trouble (Angina Pectoris)
III. NitroglycerineC. Dilation of pupil (Mydriasis)
IV. PyrethrinD. Mosquito control

Select the correct answer using the codes given below:
UPSC Prelims 1999 General Science
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2542
Neem tree (Azadirachta indica) has acquired industrial importance as a source of
UPSC Prelims 1999 Environment
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2543
Match the hormones in List I with items in List II and select the correct answer using the codes given below the lists:

List I (Hormones / Biochemicals)List II (Function / Associated Target)
I. AdrenalineA. Anger, fear, danger (Fight or Flight)
II. EstrogenB. Attracting partners through sense of smell
III. InsulinC. Female secondary sexual characteristics
IV. PheromonesD. Glucose regulation

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UPSC Prelims 1999 General Science
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2544
Consider the following statements:
An ordinary light bulb has a rather short life because the:
I. filament wire is not uniform.
II. bulb cannot be evacuated completely.
III. wires supporting the filament melt at high temperatures.

Which of the above statements are correct?
UPSC Prelims 1999 General Science
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2545
In eye donation, which one of the following parts of donor's eye is utilised?
UPSC Prelims 1999 General Science
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2546
Assertion (A): Chile continues to be an important producer of copper in the world.
Reason (R): Chile is endowed with the world's largest deposit of porphyry copper.

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UPSC Prelims 1999 World Geography
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2547
Assertion (A): Information technology is fast becoming a very important field of activity in India.
Reason (R): Software is one of the major exports of the country and India has a very strong base in hardware.

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UPSC Prelims 1999 Indian Economy
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2548
Assertion (A): According to statistics, more female children are born each year than male children in India.
Reason (R): In India, the death rate of a male child is higher than that of the female child.

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UPSC Prelims 1999 Human Geography
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2549
Assertion (A): Fiscal deficit is greater than budgetary deficit.
Reason (R): Fiscal deficit is the borrowings from the Reserve Bank of India plus other liabilities of the Government to meet its expenditure.

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UPSC Prelims 1999 Indian Economy
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2550
Assertion (A): Devaluation of a currency may promote export.
Reason (R): Price of the country's products in the international market may fall due to devaluation.

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UPSC Prelims 1999 Indian Economy
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