Tag: chemistry

Questions Related to chemistry

Which of the following is known as battery acid?

chemistry study of compounds a. hydrogen chloride laboratory method of preparation of hydrochloric acid physical and chemical properties and uses of hydrochloric acid hydrogen chloride: occurrence, preparation, purification and identification

  1. $HCl$

  2. $H _2SO _4$

  3. $HNO _2$

  4. $H _2S$

Show answer
Correct Option: B
Explanation:

Sulfuric acid is one of the most important industrial chemicals. It serves as the electrolyte in the lead-acid storage battery commonly used in motor vehicles (acid for this use, containing about 33% $H _2SO _4$ and with specific gravity about 1.25, is often called battery acid).

The process of removing seeds from cotton is called ginning.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
The term 'gin' is abbreviation form 'engine' referring to a machine which removes seeds, lint, and any other foreign particles.
The process of removing seeds from cotton is called ginning.. 

Spinning is a process of making fibers.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Fibers are first taken out form their source and then twisted into yarn by the process of spinning.

State whether true or false :

Fabric is the material produced by weaving or knitting yarn fibres.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Fabric is cloth or other material produced by weaving cotton, nylon, wool, silk, or other threads together. 


Fabrics are used for making things such as clothes, curtains, and sheets.


Therefore, option A is correct.

Ginning was traditionally done by machines. These days, machines are not used for ginning. Ginning is nowadays done with hands.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Ginning was traditionally done by hand. These days, machines are also used for ginning.

The machine used for weaving is called: 

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. tackle

  2. powerloom

  3. handloom

  4. both B and C

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Correct Option: D
Explanation:

The process of combining two different sets of yarn called weaving it is done on a machine called handloom or powerloom.

The device on which weaving is done is called:

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. Looms

  2. Ginning

  3. Weaving machine

  4. Netting device

Show answer
Correct Option: A
Explanation:

Weaving is done on looms. Loom is an apparatus used for making fabric by weaving yarn or thread.

The process of arranging two sets of yarns together to make a fabric is called ginning.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

The process of arranging two sets of yarns together to make a fabric is called weaving. 

Charkha is an example of spinning.

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Spinning of yarn on a large scale is done with the help of spinning machine. Charkha is an example of spinning machine.

Sweaters are made by the process of:

chemistry fibre to fabric: plant fibre yarn to fabric from fibre to fabric processing of fibres

  1. weaving

  2. knitting

  3. both A and B

  4. none of the above

Show answer
Correct Option: C