English Medium इयत्ता १० - CBSE Question Bank Solutions

Assertion (A): Esterification is a process in which a sweet-smelling substance is produced.

Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained.

Distinguish between esterification and saponification reactions with the help of chemical equations for each.

With a labelled diagram describe in brief an activity to show the formation of ester.

Mineral acids are stronger acids than carboxylic acids because

1. mineral acids are completely ionised
2. carboxylic acids are completely ionised
3. mineral acids are partially ionised
4. carboxylic acids are partially ionised

A few drops of ethanoic acid were added to solid sodium carbonate. The observation made was that ______.

A student while observing the properties of acetic acid would report that this smells like ______.

Vinegar is a solution of ______.

Ethanoic acid is also known as which of these?

Which of these is not an organic acid?

Ester is formed by the reaction between ______.

Which of the following substance produces brisk effervescence with baking soda solution?

When ethanoic acid is treated with NaHCO^ the gas evolved is ______.

Along the path of the vas-deferens the secretions of which gland provide nutrition to the sperms? 

In human males, the testes lie in the scrotum, because it helps in the ______ 

A pair of ducts arising from testis, which carries sperms are ______ 

In the following Question, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: In the male reproductive system, the transport of sperm takes place in a fluid that also provides nutrition.

Reason: Protective glands and seminal vesicles secret in the vas deferens.

Which of the following represents saponification reaction?

During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys

In human males, the testes lie in the scrotum, because it helps in the

The correct sequence of organs in the male reproductive system for transport of sperms is