Materials we use - class-X
Description: materials we use | |
Number of Questions: 39 | |
Created by: Jayanti Mahajan | |
Tags: carbon and its compounds water chemical reactions of organic compounds materials we use chemicals in our daily life chemistry in daily life chemistry in everyday life chemistry substances in common use |
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | $CH _3(CH _2) _{10}CH _2OS{ O }^- _3Na^+$ | (i) | Cationic detergent |
(B) | $[CH _3(CH _2) _{15}N(CH _3) _2-CH _3]^+Br^-$ | (ii) | Non-ionic detergent |
(C) | $CH _3(CH _2) _{16}COO(CH _2CH _2O) _nCH _2CH _2OH$ | (iii) | Soap |
(D) | $C _{17}H _{35}COONa$ | (iv) | Anionic detergent |
Glycerol is added to soap. It functions :
What happens when a detergent is added to water?
Which phenomenon is/are observed during washing of clothes by detergents?
The antiseptic action of dettol is due to:
Why is soap referred as a salt?
Which of the following is a type of soap?
What is salting out of soap?
Process that produces soap from fats is called as:
_________ is used as laundry soap.
When $NaOH$ is used in making of soap, it is called as:
Assertion: Hard water consumes more soap.
Reason: The ion responsible for cleansing action is precipitated out by $Ca^{2+}$ or $Mg^{2+}$ ion.
Soaps are formed by saponification of?
Which of the following pairs of ions makes the water hard?
Soaps cannot be used in hard water because they:
_________ is a major component of shampoos and soaps
Which of the following statement is not correct ?
Assertion : In O/W emulsion, soap is mixed
Reason : Soap reduces surface tension
Fertilisers are used to provide three elements needed to increase the yield of crops.
Which two compounds would provide all three of these elements?
Household detergent cause water pollution.
Statement: Detergents give scum with hard water.
Soaps are water soluble while detergents are water insoluble.
What change will you observe if you test soap with litmus paper (red and blue)?
Micelle formation take place when soap is added to water? Will a micelle be formed in other solvents like ethanol also?
Washing powders contain detergents in the range of (by mass):
Which of the following substance has bitter taste?
Soaps are sodium salts of :
A detergent is :
Soaps are:
Sodium hydroxide is found in:
A product obtained by mixing caustic soda with vegetable oils is:
We can use soap to check the hardness of water.
Which type of chemical substances is disparlure?
The soap molecule has a :
Washing soaps produce scum with hard water and not much foam because hard water contains:
Face powders are used for a smooth appearance of the skin by covering any unwanted secretions of oil. Which is the main ingredient of face powder?
Ordinary gasoline (petrol) that is used as fuel cars, scooters and automobiles contain many different chemicals that are added in small quantities, each performing an important role. Some of these are mentioned here. Which of the option is false?
Soaps are sodium salts of fatty acids, RCOONa; e.g. $C _{17}H _{35}COO^-Na^+$. It gives an insoluble precipitate / layer with