Bleaching powder is prepared by passing – (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne

Bleaching powder is prepared by passing – (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne
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(1) Chlorine over slaked lime Explanation: Calcium hypochlorite (bleaching powder) is manufactured by the calcium process: 2Cl2 + 2Ca(OH)2 (slaked lime) Ca(OCl)2 + CaCl2 + 2H2O. Bleaching powder is actually a mixture of calcium hypochlorite and the basic chloride with some slaked lime.
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Bleaching powder is prepared by passing : (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne

Description : Bleaching powder is prepared by passing : (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne

Last Answer : Chlorine over slaked lime

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on (A) Slaked lime (B) Soda lime (C) Calcium perchlorate (D) None of these

Description : Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on (A) Slaked lime (B) Soda lime (C) Calcium perchlorate (D) None of these

Last Answer : (A) Slaked lime

Bleaching powder is made from - (1) Sulphur dioxide and gypsum (2) Chlorine and Charcoal (3) Soda ash and lime (4) Lime and Chlorine

Description : Bleaching powder is made from - (1) Sulphur dioxide and gypsum (2) Chlorine and Charcoal (3) Soda ash and lime (4) Lime and Chlorine

Last Answer : (4) Lime and Chlorine Explanation: The gas which is used in the preparation of bleaching powder is chlorine. It is a mixture of lime and calcium chloride.

Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate

Description : Most widely and commonly used coagulant for the removal of suspended impurities in water is (A) Bleaching powder (B) Slaked lime (C) Alum (D) Copper sulphate

Last Answer : (C) Alum

Lime water reacts with chlorine to give a) bleaching powder b) baking powder c) baking soda d) washing soda

Description : Lime water reacts with chlorine to give a) bleaching powder b) baking powder c) baking soda d) washing soda

Last Answer : a) bleaching powder

Mostly used coagulant, is (A) Chlorine (B) Alum (C) Lime (D) Bleaching powder

Description : Mostly used coagulant, is  (A) Chlorine  (B) Alum  (C) Lime  (D) Bleaching powder

Last Answer : (B) Alum

Mortar is a mixture of water sand and (1) Slaked lime (2) Quick lime (3) Limestone (4) Gypsum

Description : Mortar is a mixture of water sand and (1) Slaked lime (2) Quick lime (3) Limestone (4) Gypsum

Last Answer : (1) Slaked lime Explanation: Mortar is a workable paste used to bind construction blocks together and fill the gaps between them. The blocks may be stone, brick, cinder blocks, etc. Mortar becomes hard ... Mortar can also be used to fix, or point, masonry when the original mortar has washed away.

Mortar is a mixture of water, sand and (1) Slaked lime (2) Quick lime (3) Limestone (4) Gypsum

Description : Mortar is a mixture of water, sand and (1) Slaked lime (2) Quick lime (3) Limestone (4) Gypsum

Last Answer : Slaked lime

How is Calcium Hydroxide (Slaked lime), Ca(OH)2 Prepared?

Description : How is Calcium Hydroxide (Slaked lime), Ca(OH)2 Prepared? 

Last Answer :  Calcium hydroxide is prepared by adding water to quick lime, CaO.

Name the gas used in preparation of bleaching powder – (1) Oxygen (2) Hydrogen (3) Nitrogen (4) Chlorine

Description : Name the gas used in preparation of bleaching powder – (1) Oxygen (2) Hydrogen (3) Nitrogen (4) Chlorine

Last Answer : (4) Chlorine Explanation: Bleaching powder in manufactured by passing chlorine gas over dry slaked lime. Bleaching powder is also called calcium chlorohypochlorite be-cause it is considered as a mixed salt of hydrochloric acid and hypochlorous acid.

Name the gas used in preparation of bleaching powder (1) Oxygen (2) Hydrogen (3) Nitrogen (4) Chlorine

Description : Name the gas used in preparation of bleaching powder (1) Oxygen (2) Hydrogen (3) Nitrogen (4) Chlorine

Last Answer : Chlorine

Most commonly used bleaching agent is – (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine

Description : Most commonly used bleaching agent is – (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine

Last Answer : (4) Chlorine Explanation: Chlorine is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, it is used ... in water Bleaching powder is an important and a commonly used bleaching agent prepared from chlorine.

Most commonly used bleaching agent is (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine

Description : Most commonly used bleaching agent is (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine

Last Answer : Chlorine

What is the difference between quick lime and slaked lime?

Description : What is the difference between quick lime and slaked lime?

Last Answer : Quick lime is calcium oxide and slaked lime is calcium hydroxide

CaO is called (A) Quick lime (B) Slaked lime (C) Limestone (D) Calcite

Description : CaO is called (A) Quick lime (B) Slaked lime (C) Limestone (D) Calcite

Last Answer : (A) Quick lime

Rotary kiln is not involved in the production of (A) Cement (B) Lime from limestone (C) Slaked lime from quick lime (D) None of these

Description : Rotary kiln is not involved in the production of (A) Cement (B) Lime from limestone (C) Slaked lime from quick lime (D) None of these

Last Answer : (C) Slaked lime from quick lime

Pick up the correct statement from the following: (A) Slaked lime contains calcium hydroxide (B) Quick lime contains calcium oxide (C) Slaked lime may be obtained from quick lime (D) All the above

Description : Pick up the correct statement from the following: (A) Slaked lime contains calcium hydroxide (B) Quick lime contains calcium oxide (C) Slaked lime may be obtained from quick lime (D) All the above

Last Answer : Answer: Option D

Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry

Description : Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry

Last Answer : i hope it helped you

For controlling algae, the most commonly used chemical, is (A) Copper sulphate (B) Alum (C) Lime (D) Bleaching powder

Description : For controlling algae, the most commonly used chemical, is  (A) Copper sulphate  (B) Alum  (C) Lime  (D) Bleaching powder 

Last Answer : (A) Copper sulphate 

To control the growth of algae in reservoirs, the compound which is used, is (A) Bleaching powder (B) Copper sulphate (C) Lime solution(D) Alum solution

Description : To control the growth of algae in reservoirs, the compound which is used, is  (A) Bleaching powder  (B) Copper sulphate  (C) Lime solution (D) Alum solution 

Last Answer : (B) Copper sulphate

Bad odour in sanitary latrines is reduced by periodically sprinkling (A) Bleaching powder (B) Lime powder (C) Aluminium sulphate (D) None of these

Description : Bad odour in sanitary latrines is reduced by periodically sprinkling (A) Bleaching powder (B) Lime powder (C) Aluminium sulphate (D) None of these

Last Answer : Option B

The percentage of available chlorine in a commercial sampleof bleaching powder is

Description : The percentage of available chlorine in a commercial sampleof bleaching powder is

Last Answer : The percentage of available chlorine in a commercial sampleof bleaching powder is A. `52.9%` B. `55.9%` C. `58%` D. `60%`

What is the chemical name of bleaching powder? A. Calcium Hypochlorite B. Calcium Chlorate C. Calcium Chloride D. Chlorine

Description : What is the chemical name of bleaching powder? A. Calcium Hypochlorite B. Calcium Chlorate C. Calcium Chloride D. Chlorine

Last Answer : ANSWER: A

What is the chemical name of bleaching powder? A. Calcium Hypochlorite B. Calcium Chlorate C. Calcium Chloride D. Chlorine

Description : What is the chemical name of bleaching powder? A. Calcium Hypochlorite B. Calcium Chlorate C. Calcium Chloride D. Chlorine

Last Answer : ANSWER: A

Bleaching powder contains------? A. Nitrogen B. Iodine C. Chlorine (Answer) D. Bromine

Description : Bleaching powder contains------? A. Nitrogen B. Iodine C. Chlorine (Answer) D. Bromine

Last Answer : C. Chlorine (Answer)

The most widely used coagulant for removing suspended impurities from water is (A) Bleaching powder (B) Chlorine (C) Calcium sulphate (D) Alum

Description : The most widely used coagulant for removing suspended impurities from water is (A) Bleaching powder (B) Chlorine (C) Calcium sulphate (D) Alum

Last Answer : (D) Alum

The percentage of chlorine in fresh bleaching powder is roughly (A) 50 to 60 (B) 30 to 35 (C) 40 to 50 (D) 20 to 25

Description : The percentage of chlorine in fresh bleaching powder is roughly (A) 50 to 60 (B) 30 to 35 (C) 40 to 50 (D) 20 to 25

Last Answer : (B) 30 to 35

A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Description : A rural water supply serves a population of 10, 000 at the rate of 50 litres per capita per day . For the chlorine dose of 2 PPM the required amount of bleaching powder with 20% available chlorine will be a. 0.5 kg b. 5 kg * c. 10 kg d. 15 kg

Last Answer : b. 5 kg

When quick lime is mixed with Carbon dioxide it turns into?

Description : When quick lime is mixed with Carbon dioxide it turns into?

Last Answer : Milky colour

Quick lime (A) Generates heat when added to water (B) Reacts with carbon dioxide (C) May be used for white-washing (D) All the above

Description : Quick lime (A) Generates heat when added to water (B) Reacts with carbon dioxide (C) May be used for white-washing (D) All the above

Last Answer : Answer: Option D

Urea is prepared by the chemical reactions of (a) Ammonium sulphate and calcium chloride (b) Ammonia and carbon dioxide (c) Chlorine and water (d) Acetamide and ethyl alcohol

Description : Urea is prepared by the chemical reactions of (a) Ammonium sulphate and calcium chloride (b) Ammonia and carbon dioxide (c) Chlorine and water (d) Acetamide and ethyl alcohol

Last Answer : Ans: (b)

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them 

Last Answer : Carbon dioxide

Bleaching of paper pulp is done with (A) Activated clay (B) Bromine (C) Chlorine or chlorine dioxide (D) Magnesium sulphite

Description : Bleaching of paper pulp is done with (A) Activated clay (B) Bromine (C) Chlorine or chlorine dioxide (D) Magnesium sulphite

Last Answer : (C) Chlorine or chlorine dioxide

The end bleaching agent used to move last traces of colour bodies from the pulp is (A) Chlorine dioxide (ClO2 ) (B) MgO (C) SO2 gas (D) Mercaptans

Description : The end bleaching agent used to move last traces of colour bodies from the pulp is (A) Chlorine dioxide (ClO2 ) (B) MgO (C) SO2 gas (D) Mercaptans

Last Answer : (A) Chlorine dioxide (ClO2 )

What is slaked lime ?

Description : What is slaked lime ?

Last Answer : Slaked lime is calcium hydroxide. It is also called colchicum.

Write any three uses of Calcium Hydroxide (Slaked lime)

Description : Write any three uses of Calcium Hydroxide (Slaked lime)

Last Answer : Ans i) It is used in the preparation of mortar, a building material. (ii) It is used in white wash due to its disinfectant nature. (iii) It is used in glass making, in tanning industry, for the preparation of bleaching powder and for purification of sugar.

write any three uses of Calcium Hydroxide (Slaked lime)

Description : write any three uses of Calcium Hydroxide (Slaked lime) 

Last Answer : i) It is used in the preparation of mortar, a building material.  (ii) It is used in white wash due to its disinfectant nature. (iii) It is used in glass making, in tanning industry, for the preparation of bleaching powder and for purification of sugar. 

Write a note on the Physical Properties of Calcium Hydroxide (Slaked lime), Ca(OH)2

Description : Write a note on the Physical Properties of Calcium Hydroxide (Slaked lime), Ca(OH)2

Last Answer : It is a white amorphous powder. It is sparingly soluble in water. The aqueous solution is known as lime water and a suspension of slaked lime in water is known as milk of lime. 

Find the odd one: (1) Marble (2) Chalk (3) Limestone (4) Slaked lime

Description : Find the odd one: (1) Marble (2) Chalk (3) Limestone (4) Slaked lime

Last Answer : Slaked lime

Carbon dioxide is – (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Description : Carbon dioxide is – (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer : (1) a reducing agent Explanation: A good reducing agent must be able to donate electrons readily. This means that it must not have very much attraction for electrons. Carbon dioxide is just like any other oxide and can be reduced to its respective elements by applied energy.

Carbon dioxide is (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Description : Carbon dioxide is (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer :  a reducing agent

Foul odour and bad taste of water is removed by treating with (A) Alum (B) Bleaching powder (C) Activated carbon (D) Copper sulphate

Description : Foul odour and bad taste of water is removed by treating with (A) Alum (B) Bleaching powder (C) Activated carbon (D) Copper sulphate

Last Answer : (C) Activated carbon

What is the ratio of slaked lime and sand in mortar ?

Description : What is the ratio of slaked lime and sand in mortar ?

Last Answer : Ratio is 1:3

The commercial name for calcium hydride is (a) Lime (b) Hydrolith (c) Slaked lime (d) Calgon

Description : The commercial name for calcium hydride is (a) Lime (b) Hydrolith (c) Slaked lime (d) Calgon

Last Answer : Ans:(b)

Which of the following is acidic in nature? a) Apple juice b) Soap solution c) Slaked lime d) Lime

Description : Which of the following is acidic in nature? a) Apple juice b) Soap solution c) Slaked lime d) Lime

Last Answer : a) Apple juice

The product obtained on mixing calcium oxide with water is called (A) Quicklime (B) Slaked lime (C) Milk of lime (D) None of these

Description : The product obtained on mixing calcium oxide with water is called (A) Quicklime (B) Slaked lime (C) Milk of lime (D) None of these

Last Answer : (B) Slaked lime

Addition of calcium oxide to water produces (A) Exothermic heat (B) Hissing sound (C) Slaked lime (D) All (A), (B) & (C)

Description : Addition of calcium oxide to water produces (A) Exothermic heat (B) Hissing sound (C) Slaked lime (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Ca(OH)2 is called (A) Quicklime (B) Slaked lime (C) Limestone (D) Gypsum

Description : Ca(OH)2 is called (A) Quicklime (B) Slaked lime (C) Limestone (D) Gypsum

Last Answer : (B) Slaked lime

__________ of quicklime produces slaked lime. (A) Hydration (B) Dehydration (C) Hydrogenation (D) None of these

Description : __________ of quicklime produces slaked lime. (A) Hydration (B) Dehydration (C) Hydrogenation (D) None of these

Last Answer : (A) Hydration