Uses of metals:

(i) Lead metal is used in making car batteries.

(ii) Zinc is used for galvanizing iron to protect it from rusting.

(iii) Iron, copper and aluminium are used to make utensils.

(iv) Copper and aluminium metals are used to make wires.

(v) Aluminium is used to make aluminium foil for packaging materials.

Uses of non-metals:

(i) Hydrogen is used in the hydrogenation of vegetable oils.

(ii) Carbon is used to make electrodes of electrolytic cells and dry cells.

(iii) Nitrogen is used in the manufacture of ammonia, nitric acid and fertilizers.

(iv) Sulphur is used in making sulphuric acid.

(v) Liquid hydrogen is used as rocket fuel.

• An alloy is a homogeneous mixture of two or more metals (or a metal and small amount of non-metals) prepared by mixing the various metals in molten state in required proportions, and then cooling their mixture to the room temperature. Alloys do not corrode easily.

There are reserved constituencies in both Parliamentary and State Assembly elections. Thus, there may be as many Wards or Constituencies as the number of elected seats in the elected body. Reserved constituencies are those constituencies in which seats are reserved for SCs and STs on the basis of their population. We need reserved constituencies to give equal right to vote to all the citizens because India has a adult franchise. To give equal seats in democracy to weaker it is important.

Salt March or Dandi March was a 24-day non-violent march led by Mahatma Gandhi. New Delhi: On March 12, 1930.British officials introduced taxation on salt production, deemed their sea-salt reclamation activities illegal, and then repeatedly used force to stop it.

The Salt March, also known as the Dandi March and the Dandi Satyagraha, was an act of nonviolent civil disobedience in colonial India led by Mohandas Karamchand Gandhi to produce salt from the seawater in the coastal village of Dandi.

The Salt Satyagraha campaign was based upon Gandhi's principles of non-violent protest called satyagraha, which he loosely translated as "truth-force"."[8] Literally, it is formed from the Sanskrit words satya, "truth", and agraha, "insistence".

Let he full marks be x
student obtained 35% of x
= 35/100x

thus,
24.5 = 35/100x
x = 24.5x100/35
x = 70
Full marks was 70

Let side of the square = a m

If one side of a square is increased by 2 m

and other side is reduced by 2 m , a rectangle

is formed

Dimensions of the rectangle

length = ( a + 2 ) m

Breadth = ( a - 2 ) m

According to the problem given ,

Perimeter of the rectangle = 48 m

2( l + b ) = 48

2 [ a + 2 + a - 2 ] = 48

2 × 2a = 48

4a = 48

a = 48 / 4

a = 12

Therefore side of the original

square = a = 12m

One of the major functions of cytoplasm is to enable cells to maintain their turgidity, which enables the cells to hold their shape. Other functions of cytoplasm are as follows:

• The jelly-like fluid of the cytoplasm is composed of salt and water and is present within the membrane of the cells and embeds all of the parts of the cells and organelles.
• The cytoplasm is home to many activities of the cell as it contains molecules, enzymes that are crucial in the break down of the waste.
• The cytoplasm also assists in metabolic activities.
• Cytoplasm provides shape to the cell. It fills up the cells thus enabling the organelles to remain in their position. The cells, without cytoplasm, would deflate and substances will not permeate easily from one to the other organelle.
• A part of the cytoplasm, the cytosol has no organelles. Rather, the cytosol is enclosed by matrix boundaries that fill up the cell section which does not hold the organelles.

The 1937-1947 was the crucial decade in the history of India as well as of whole South Asia. Some of the developments in this decade that lead to the creation of Pakistan are :

1.  In Provincial elections of 1937, Muslim League lost even the Muslim majority states which created fear among them about the Muslim representation.

2.  1940 Lahore session of Muslim League which adopted the resolution of two-nation theory and Muslim league began to demand separate nation for Muslims.

3.  Failure of negotiations between the Congress and Muslim League as well as of British during the Second World War. Various commissions visited during this period but could brought Muslim League and Congress together.

4.  Elections of 1946 which lead to the domination of Muslim league in Muslim majority areas. It emboldened the Muslim League and it also showed Muslims want partition.

5.  Communal riots also made the British authorities to partition India which lead to the creation of Pakistan.

Kabir also known as Kabir Das' was born and brought up in a Muslim weavers family by Niru and Nima. He was a mystic poet and a musician and was one of the important saints of Hinduism and also considered a Sufi by Muslims. He is respected by Hindus, Muslims and Sikhs. He was a disciple of Ramananda.