Brittleness of cold is due to an excess of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon

Brittleness of cold is due to an excess of
(A) Sulphur
(B) Carbon
(C) Phosphorus
(D) Silicon
by

1 Answer

Answer :

Answer: Option C
by

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Red short iron cracks when bent due to the presence of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon

Description : Red short iron cracks when bent due to the presence of (A) Sulphur (B) Carbon (C) Phosphorus (D) Silicon

Last Answer : Answer: Option A

In vulcanization, natural rubber is heated with- (1) Carbon (2) Sulphur (3) Silicon (4) Phosphorus

Description : In vulcanization, natural rubber is heated with- (1) Carbon (2) Sulphur (3) Silicon (4) Phosphorus

Last Answer : (2) Sulphur Explanation: Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur, which results in three-dimensional crosslinking of the chain rubber molecules (polyisoprene) bonded to each other by sulfur atoms.

Brittleness induced due to the presence of sulphur in steel can be reduced by adding (A) Manganese (B) Magnesium (C) Vanadium (D) Copper

Description : Brittleness induced due to the presence of sulphur in steel can be reduced by adding (A) Manganese (B) Magnesium (C) Vanadium (D) Copper

Last Answer : (A) Manganese

Brittleness induced due to the presence of sulphur in steel can be reduced by adding (A) Manganese (B) Magnesium (C) Vanadium (D) Copper

Description : Brittleness induced due to the presence of sulphur in steel can be reduced by adding (A) Manganese (B) Magnesium (C) Vanadium (D) Copper

Last Answer : r: Option A

Iron ore may contain (A) Carbon (B) Silicon (C) Phosphorus and manganese (D) All the above

Description : Iron ore may contain (A) Carbon (B) Silicon (C) Phosphorus and manganese (D) All the above

Last Answer : Answer: Option D

The element used for vulcanizing rubber is - (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Description : The element used for vulcanizing rubber is - (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Last Answer : (1) Sulphur Explanation: The vulcanization of neoprene or polychloroprene rubber (CR rubber) is carried out using metal oxides (specifically MgO and ZnO, sometimes Pb3O4) rather than sulfur compounds which are presently used with many natural and synthetic rubbers.

The element which is used for vulcanizing rubber – (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Description : The element which is used for vulcanizing rubber – (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Last Answer : (1) Sulphur Explanation: Vulcanisation is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives" or "accelerators". By far the most common vulcanizing methods depend on sulfur.

Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property? (A) Silicon (B) Phosphorus (C) Sulphur (D) None of these

Description : Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property? (A) Silicon (B) Phosphorus (C) Sulphur (D) None of these

Last Answer : (A) Silicon

The element which is used for vulcanizing rubber (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Description : The element which is used for vulcanizing rubber (1) Sulphur (2) Bromine (3) Silicon (4) Phosphorus

Last Answer : Sulphur

Acid rain is caused due to pollution of atmosphere by – (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorus (4) None of these

Description : Acid rain is caused due to pollution of atmosphere by – (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorus (4) None of these

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High amount of sulphur and phosphorous in coke causes (A) Decrease in its calorific value (B) Increase in its strength(C) Brittleness of steel made by using it(D) None of these

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Last Answer : (C) Brittleness of steel made by using it

The ‘Green House effect' is produced due to the presence of excess amount of – (1) Sulphur dioxide (2) Nitrogen dioxide (3) Carbon monoxide (4) Methane

Description : The ‘Green House effect' is produced due to the presence of excess amount of – (1) Sulphur dioxide (2) Nitrogen dioxide (3) Carbon monoxide (4) Methane

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A liquid/gaseous fuel containing hydrocarbons and high amount of sulphur is burnt with 40% excess air. The flue gas still contains large amount of carbon monoxide. This may be due to the (A) Presence of large quantity of hydrogen in the fuel (B) Low calorific value of the fuel (C) High sulphur content in the fuel (D) Lack of thorough mixing of fuel with air

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Last Answer : (D) Lack of thorough mixing of fuel with air

The ‘Green House effect’ is produced due to the presence of excess amount of (1) Sulphur dioxide (2) Nitrogen dioxide (3) Carbon monoxide (4) Methane

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Last Answer : Methane

Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Description : Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Last Answer : ANSWER: Y -- CARBON-SILICON GROUP

Which of the following is used in making smoke bombs? (1) Sulphur (2) Phosphorus (3) Hydrogen (4) Carbon

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Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its (A) Corrosion resistance (B) Tensile strength (C) Machinability (D) Compressive strength

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Last Answer : (C) Machinability

Which of the following pairs is a sedimentary type of biogeochemical cycle? (a) Phosphorus and nitrogen (b) Phosphorus and sulphur (c) Oxygen and nitrogen (d) Phosphorus and carbon dioxide

Description : Which of the following pairs is a sedimentary type of biogeochemical cycle? (a) Phosphorus and nitrogen (b) Phosphorus and sulphur (c) Oxygen and nitrogen (d) Phosphorus and carbon dioxide

Last Answer : (b) Phosphorus and sulphur

Which one of the following is not a gaseous biogeochemical cycle in ecosystem? (a) Sulphur cycle (b) Phosphorus cycle (c) Nitrogen cycle (d) Carbon cycle

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Last Answer : b) Phosphorus cycle

In which of the following both pairs have correct combination? (a) Gaseous nutrient cycle, Sedimentary nutrient cycle Nitrogen and Sulphur, Carbon and Phosphorus (b) Gaseous nutrient cycle, Sedimentary nutrient cycle Sulphur and Phosphorus, Carbon and Nitrogen (c) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Nitrogen, Sulphur and Phosphorus (d) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Sulphur, Nitrogen and Phosphorus

Description : In which of the following both pairs have correct combination? (a) Gaseous nutrient cycle, Sedimentary nutrient cycle Nitrogen and Sulphur, Carbon and Phosphorus (b) Gaseous nutrient cycle ... (d) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Sulphur, Nitrogen and Phosphorus

Last Answer : (c) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Nitrogen, Sulphur and Phosphorus

About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.

Description : About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.

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Which one of the following is not a gaseous biogeochemical cycle in ecosystem ? (1) Carbon cycle (2) Sulphur cycle (3) Phosphorus cycle (4) Nitrogen cycle

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Vulcanization of rubber is carried out by adding (1) Sulphur (2) Carbon (3) Ozone (4) Phosphorus

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Last Answer : Sulphur

Which of the following is used in making smoke bombs? (1) Sulphur (2) Phosphorus (3) Hydrogen (4) Carbon

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__________ is added in low carbon steel to raise its yield point. (A) Sulphur (B) Phosphorous (C) Silicon (D) Manganese

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Upon heating`KClO_(3)` in presence of catalytic amount of `MnO_(2)`, a gas `W` is formed. Excess amount of `W` reacts with white phosphorus to given `

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Description : Which of the following is used as a lubricant in heavy machines? (1) Bauxite (2) Sulphur (3) Phosphorus (4) Graphite

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Which one of the following non-metals is not a poor conductor of electricity? (1) Sulphur (2) Selenium (3) Bromine (4) Phosphorus

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