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Current Affairs January 2024

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Which of the following is an ore of iron?

A. Galena

B. Chalcopyrite

C. Hematite

D. Bauxite

Correct Answer :

C. Hematite


Related Questions

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Very fine suspended and colloidal impurities are removed from water by a process called

A. Sedimentation

B. Coagulation

C. Disinfection

D. Softening

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Bleaching of paper pulp is done with

A. Activated clay

B. Bromine

C. Chlorine or chlorine dioxide

D. Magnesium sulphite

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Trinitrotoluene (TNT), an explosive, is made by the nitration of

A. Nitrobenzene

B. Toluene

C. Nitrotoluene

D. Benzene

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Lindane is

A. Not a fumigant

B. BHC (Benzene Hexachloride) containing 99% γ-isomer

C. A by-product of BHC manufacture

D. Both (B) and (C)

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Oil is a/an

A. Mixture of glycerides

B. Mixture of glycerides of fatty acids

C. Solid at normal temperature

D. Ester of alcohols other than glycerine

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Ultimate analysis of coal determines its __________ content.

A. Carbon, hydrogen, nitrogen & sulphur

B. Carbon, ash, sulphur & nitrogen

C. Carbon, sulphur, volatile matter & ash

D. Carbon, volatile matter, ash & moisture

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Sand and __________ is fused at 1300°C, to produce sodium silicate.

A. Limestone

B. Soda ash

C. Coke

D. Sodium sulphate

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Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

A. 15-30

B. 90-100

C. 250-300

D. < 0

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Magnesium and calcium __________ cause temporary hardness of water.

A. Carbonates

B. Bicarbonates

C. Phosphates

D. Sulphates

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The main use of HCl is in the

A. Drilling of petroleum wells and pickling of steel sheets

B. Manufacture of cationic detergent

C. Treatment of spent fuel of nuclear reactor

D. None of these

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Cement mainly contains

A. CaO, SiO2, Al2O3

B. MgO, SiO2, K2O

C. Al2O3, MgO, Fe2O3

D. CaO, MgO, K2O

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Sodium carbonate (soda ash) is not used in the manufacture of

A. Fire extinguishers

B. Sugar

C. Baking powder

D. Detergents

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Which is a high grade pulp?

A. Rag pulp

B. Mechanical pulp

C. Sulphate pulp

D. Sulphite pulp

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The catalyst used in shift converter is

A. Nickel

B. Vanadium

C. Silica gel

D. Alumina

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Enzymes are organic catalysts used in the __________ reactions.

A. Chemical

B. Biochemical

C. Photochemical

D. Electrochemical

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Nickel is not used as a catalyst in the __________ reaction.

A. Shift conversion

B. Oil hydrogenation

C. Steaming reforming of naphtha

D. Ammonia cracking/dissociation

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Which form of sulphur is the most stable at room temperature?

A. Plastic

B. Monoclinic

C. Rhombic

D. Flowers of sulphur

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Which of the following, when pyrolysed, produces Perchloroethylene?

A. Ethylene dichloride

B. Chlorobenzene

C. Carbon tetrachloride

D. Chlorinated paraffin

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Blue colour is imparted to glass by the addition of

A. FeSO4

B. PbO

C. CaO

D. NaOH

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Bisphenol A is produced by the condensation of acetone with

A. Formaldehyde

B. Ethyl alcohol

C. Diethyl ether

D. Phenol

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An alkali metal salt of Palmitic acid is known as

A. Soap

B. Metallic soap

C. Detergent

D. Alkaloid

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High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to

A. Flocculate the impurities

B. Facilitate fast filtration

C. Both (A) and (B)

D. Neither (A) nor (B)

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With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide

A. Increases

B. Increases linearly

C. Decreases

D. Decreases linearly

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Phenolic antiseptics are added in the __________ soap.

A. Shaving

B. Medicated

C. Metallic

D. Transparent

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Sea weeds are an important source of

A. Fluorine

B. Chlorine

C. Bromine

D. Iodine

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Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

A. 1 atm & 100°C

B. 5 atm & 275°C

C. 100 atm & 500°C

D. 50 atm & 1000°C

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Starting material for the production of butadiene in India is

A. Naphthalene

B. Benzol

C. Ethyl alcohol

D. Phthalic anhydride

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Carbon disulphide is mainly used in the production of

A. Viscose rayon

B. Corundum

C. Plasticiser for unsaturated polyester

D. Paints

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Concentration of hydrogen peroxide is done by

A. Crystallisation

B. Vacuum crystallisation

C. Atmospheric distillation

D. Dehydration

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The major constituents of glass are

A. Lime, clay and soda ash

B. Sand, lime and soda ash

C. Silica, alumina and clay

D. Silica, alumina and soda ash