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Recently added practice questions

10681. Carborundum consists mainly of_________________?
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A. Boron carbide

B. Silicon carbide

C. Calcium carbide

D. Bauxite

10682. Carbonic anhydrase in the kidney tubular cells is known to be associated with_____________?
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A. Urea

B. Carbohydrate

C. Bicarbonate ion

D. Chloride

10683. Carbonation of coal is the process of________________________?
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A. pulverising coal in inert atmosphere

B. heating wood in a limited supply of air at temperatures below 300C

C. binding the pulverised coal into brick-ettes

D. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

E. enriching carbon in the coal

10684. Carbon rods are used in wet and dry cells because_____________?
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A. carbon rod serves as conductor

B. carbon can resist the attack of battery acid

C. both (A) and (B)

D. either (A) or (B)

10685. Carbon resistors are used extensively because they are____________?
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A. all of the above reasons

B. inexpensive

C. compact

D. easy to make

10686. Carbon residue in diesel oil should not be more than___________________?
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A. 0.001%

B. 0.01%

C. 0.50%

D. 0.10%

E. 1%

10687. Carbon refractories_____________________?
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A. Do not resist temperature fluctuations

B. Have extremely low thermal & electrical conductivities

C. Are not attacked by slags, as they are not wetted by melts

D. Do not burn/oxidise, when exposed to air on heating

10688. Carbon refractories are exclusively used in the_________________?
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A. Side wall of soaking pits

B. Regenerators of coke oven

C. Hearth of blast furnace

D. Walls of coke oven

10689. Carbon percentage (by weight) in crude petroleum may be about_________________?
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A. 65

B. 95

C. 85

D. 75

10690. Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of _____________________ poison?
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A. Stability

B. Selectivity

C. Deposited

D. Chemisorbed

10691. Carbon monoxide poisoning causes_______________?
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A. Oxygen dissociation curve shifts to left

B. Cyanosis

C. Hypoxic hypoxia

D. Diffusion capacity of lungs decreases

10692. Carbon dioxide was discovered by_______?
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A. Amedeo Avogadro

B. Niels Bohr

C. Joseph Black

D. None of Above

10693. Carbon bearings are used under which of the following conditions ?
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A. Where corrosive chemical action exists

B. All of the above

C. Where high temperature exists

D. Where lubrication is difficult or im-possible

10694. Carbon atom is_____________?
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A. Divalent

B. Trivalent

C. Monovalent

D. Tetravalent
10695. Carbohydrates are polyhydroxy compounds of___________________?
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A. Glucose

B. Glyceraldehydes

C. Aldehydes and ketones

D. Oligosaccharides

10696. Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
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A. 70% aluminium oxide & 30% silica

B. 65% tungsten & 35% zirconium

C. 30% nickel, 15% chromium & 55% tungsten

D. 90% tungsten carbide and 10% cobalt
10697. Carbamazepine is a type of___________?
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A. Antidepressant

B. Antinflammatory

C. Antibiotic

D. Antiemetic

10698. Carbamazepine has been utilized to successfully diminish attacks in trigeminal neuralgia. During this therapy which of the following is indicated ?
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A. Complete blood investigation only if adverse symptoms arise

B. Clinical observation only

C. No monitoring

D. Clinical observation and complete blood and platelet counts prior to and at frequent intervals during therapy
10699. Caracas is capital of_____________?
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A. >Venezuela

B. US

C. Australia

D. Brazil

10700. Captain Muhammad Sarwar was martyred in the war of ________ ?
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A. 1948

B. 1971

C. None of them

D. 1965

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