Action of dilute hydrochloric acid on magnesium sulphite

What do you understand by the following statements:

1. The heat capacity of the body is 60 JK^-1.
2. The specific heat capacity of lead is 130 Jkg^-1K^-1.

State one advantage of inland waterways.

The diagram given below represents a section of the human heart. Answer the questions that follow:

1. Which parts of heart are in the diastolic phase? Give a reason to support your answer.
2. Label the parts
...

State your observations when:

Dilute Hydrochloric acid is added to Lead nitrate solution and the mixture is heated.

Explain briefly the territorial rearrangements as a result of World War I.

1. What are free electrons?
2. Why do they not leave the metal surface on their own?
3. How can they be made to leave the metal surface?

Explain any three political causes of the Revolt of 1857.

Mention the exact location of the following:

1. Prostate gland
2. Myelin sheath
3. Islets of Langerhans
4. Semi-circular canals
5. Eustachian tube

With reference to George Orwell’s ‘The Animal Farm’, answer the following questions:

(i) What decisions were made regarding the retiring age of the animals at the beginning when the laws of Animal...

Inert gases do not form ions.

State two factors upon which the rate of emission of thermions depends.

The covalent bond in which the electrons are shared equally between the combining atoms.

The compound that does not have a lone pair of electrons is _______ . (water, ammonia, carbon tetra chloride)

Complete the path of the ray AB through the glass prism in PQR till it emerges out of the prism. Given the critical angle of the glass as 42^o.

Give two reasons to explain as to why we need to conserve our forest resource.