English Medium Class 10 - CBSE Question Bank Solutions

The electron dot structure of chlorine molecule is:

It is observed that covalent compounds are had conductors of electricity. Give reason. 

Carbon can neither form C^4- cation nor C⁴ anion. Why?

Name the following:

\[\ce{CH3 - CH2CH = CH2}\]

Show the covalent bond formation in nitrogen molecule.

The number of single and double bonds present in a molecule of benzene (C₆H₆) respectively, are ______.

State whether the following statement is true or false:

The value of systolic pressure is always lower than that of diastolic pressure.

What is meant by saying that the blood pressure of a person is 120/80?

What is meant by ‘systolic pressure’? What is its normal value?

What are the two factors used to express the blood pressure of a person?

The instrument for measuring blood pressure is called ______.

Normal blood pressure (systolic/diastolic) is ____________.

In humans, the life processes are controlled and regulated by ____________.

In humans, the life processes are controlled and regulated by

Label the endocrine glands in the given figure.

Which endocrine gland is present in males but not in females?

The extracellular fluid which always flows from body tissues to the heart is called ______.

What is lymph?

Name a circulatory fluid in the human body other than blood.

What is lymphatic system?