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Shivani siva
@shivani-siva
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Joined: Aug 6, 2021
Last seen: Sep 10, 2021
Topics: 289 / Replies: 1732
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Answer to: Give a test that can be used to differentiate between butter and cooking oil.

Butter is saturated in nature while cooking oil is unsaturated. This means that cooking oil has at-least one C—C bond present in the constituting comp...

3 years ago
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Answer to: Which of the listed hydrocarbons undergo addition reactions: C2H6, C3H8, C3H6, C2H2 and CH4?

C3H6 and C2H2 undergo addition reaction as they are unsaturated hydrocarbons. As unsaturated hydrocarbons have double and triple bonds.

3 years ago
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Answer to: What is hydrogenation? What is its industrial application?

Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as ni...

3 years ago
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Answer to: What change will you observe by testing soap with litmus paper (blue or red)?

When soap is dissolved in water, the solution is alkaline in nature due to the formation of alkali NaOH or KOH. The solution changes the colour of red...

3 years ago
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Answer to: Explain the formation of scum when hard water is treated with soap.

Soap is basically sodium or potassium salts of higher fatty acids. Hard water contains Ca2+ and Mg2+ ions as their salts. When soap is added to hard w...

3 years ago
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Answer to: Why are carbon and its compounds used as fuels in most cases?

Carbon burns in oxygen to form carbon dioxide gas. The reaction is highly exothermic. That is why different forms of coal are used as fuels. The most ...

3 years ago
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Answer to: Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also?

Soap may be represented by the formula RCOONa where R is an alkyl group which represents a long chain of carbon with fifteen or more atoms. Now, oil d...

3 years ago
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Answer to: How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?

Distinction based on physical properties are as: (a) Smell: Ethanol has a characteristic smell known as alcoholic smell which is pleasant. Ethanoic ...

3 years ago
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Answer to: What is a homologous series? Explain with an example.

A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group. It can be repre...

3 years ago
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3 years ago
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Answer to: People use different methods to wash clothes. Usually, after adding the soap, they beat the clothes on a stone or beat them with a paddle, scrub with a brush or the mixture is agitated in a washing machine.

The purpose of soap or detergent in washing is to reduce friction between the oil drops carrying dirt particles and the water so that they may mix wit...

3 years ago
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Answer to: Will you be able to check if water is hard by using a detergent?

No, it is not possible. Detergents produce foam in any type of water; whether hard or soft Therefore, a distinction between the two cannot be made. Ho...

3 years ago
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Answer to: What are oxidising agents?

Oxidising agents are the substances which either on their own or on reacting with another substance release oxygen in order to carry oxidation reactio...

3 years ago
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Answer to: How would you distinguish experimentally between alcohol and carboxylic acid?

The distinction can be made by the following, tests: (a) Dip a strip of blue litmus paper separately in both alcohol and carboxylic acid taken in tw...

3 years ago
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Answer to: A mixture of ethyne and oxygen is used for welding. Can you tell why a mixture of ethyne and air is not used?

When ethyne is burnt in oxygen, a large quantity of heat along with light is produced. The heat evolved can be used for gas welding which is usually c...

3 years ago
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Answer to: Why is the conversion of ethanol into ethanoic acid an oxidation reaction?

Ethanoic acid (CH3COOH) has one oxygen atom more and two hydrogen atoms less than ethanol (C3H5OH). In general, Loss of hydrogen is known as oxida...

3 years ago
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Answer to: Draw the structures of the following compounds: (a) Ethanoic acid (b) Bromopentane (c) Butanone

(a) OR (b) or CH3 - CH2 - CH2 - CH2 - CH2 - Br (c) Butanone or (d) Hexanal or Bromopentane has a chain of five carbon atoms...

3 years ago
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Answer to: Which of the following is not an assumption of the kinetic theory of gases? (a) Gas particles have negligible volume. (b) A gas consists of many identical particles which are in continual motion.

Correct answer: (c) At high pressure, gas particles are difficult to compress. Explanation: At high pressure real gas particles are easily compres...

3 years ago
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Answer to: A neon-dioxygen mixture contains 70.6 g O2 and 167.5 g neon. If pressure of the mixture of gases in the cylinder is 25 bar.

Correct answer: (d) 5.25 bar, 19.75 bar Explanation: Number of moles of O2 = = 2.21 mole Number of moles of Ne = = 8.375 mole Mole fract...

3 years ago
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