Anaesthetics

Q. ${\mathrm{CaOCl}}_2$ is the product formed due to the reaction between calcium hydroxide and ___ and is commonly known as ___.

1. chlorine, bleaching powder
2. hydrochloric acid, baking powder
3. hydrogen, washing soda
4. hydrochloric acid, baking soda

Q.

Is Teflon a Polymer?

Q. The chemical name of teflon is ______.

1. polytetrafluoroethene
2. polytetrafluoroethane
3. polytetrafluoroprene
4. polyethylene terephthalate

Q. The advantage of detergent over soap is, they are ____________ .

1. cheaper to make
2. biodegradable
3. useful in hard water
4. synthetic

Q.

Name four cosmetic products used by us in daily life.

Q. ______ are the sources of synthetic dyes.

1. Flowers
2. Leaves
3. Roots
4. Petrochemicals

Q. Identify the product 'P' formed in the given reaction.
${\text{CaOCl}}_2\text{(s)}+{\text{H}}_2{\text{SO}}_4\text{(aq)}\to \text{P}+{\text{Cl}}_2\text{(g)}+{\text{H}}_2\text{O}\text{(l)}$

1. ${\text{CaCO}}_3$
2. ${\text{SO}}_2$
3. ${\text{CaSO}}_4$
4. ${\text{CaCl}}_2$

Q.

Which of the following statements are true regarding characteristics of Teflon?​
P: It is non-sticky in nature.​
Q: It is heat resistant.​
R: It is a good conductor of electricity.​

1. Only P
2. P, Q and R
3. P and Q
4. Only R

Q.

38) Which of the following substances does not form a curdy precipitate when it is added to hard water.

1. potassium salt of fatty acid

2. sodium salt of fatty acid

3. sodium lauryl sulfate

4. none of the above

Q.

What happens when chlorine reacts with slaked lime?

Q. Why don’t stains erase when washed with water alone?

1. Water is a non polar solvent and hence can not remove the stains.
2. Most stains are oily in nature.
3. Water forms a precipitate with the stains and sticks to the clothes.
4. Water forms micelles with strains.

Q. ______ are the sources of synthetic dyes.

1. Leaves
2. Petrochemicals
3. Roots
4. Flowers

Q. Which of these does not fade clothes?

1. Soaps
2. Bleaching powder
3. Powder detergent
4. Liquid detergent

Q. ______ are the sources of synthetic dyes.

1. Leaves
2. Petrochemicals
3. Roots
4. Flowers

Q.

A water is said to be hard if:

1. it does not lather readily with soap.

2. it does not contain minerals.

3. it does not lather readily with detergents.

4. it lathers readily with soap.

Q. Which of the following are the uses of ${\text{CaOCl}}_2$?

1. Used for bleaching of clothes
2. Used for softening of water
3. Used for baking
4. Used for disinfecting the garbage sites

Q. Choose the characteristics of teflon from the options given below.

1. Non-stick in nature
2. Heat resistance
3. Abrasion resistance
4. Good conductor of heat

Q. Which of the following should be used as a disinfectant?

1. ${\text{Na}}_2{\text{CO}}_3$
2. ${\text{CaOCl}}_2$
3. $\text{NaCl}$
4. ${\text{NaHCO}}_3$

Q. Which chemical is used to whiten the wood pulp in paper industry?

1. Salt
2. Bleaching powder
3. Washing soda
4. Baking soda

Q.

Name four cosmetic products used by us in daily life.

Q. A cleaning substance made from animal fat or vegetable oil is called ______ .

1. bleaching powder
2. detergent
3. soap
4. washing liquid

Q. The harmful elements present in small quantities in food colour are:

1. Lead
2. Mercury
3. Magnesium
4. Aluminium

Q. Which of the given dilute acids react with bleaching powder to release chlorine gas?

1. Sulphuric acid
2. Nitric acid
3. Hydrochloric acid
4. Acetic acid

Q. Which of the following is true?

1. Soaps are more effective in hard water than detergents.
2. Detergents are more effective in hard water than soaps.
3. Detergents and soaps are equally effective.
4. The type of water doesn't affect the effectiveness of detergents or soaps.