1. Hydrogen matches the properties of the first group and seventh group of the periodic table.

2. Following is some additional information about the properties of hydrogen.

- Hydrogen is a highly flammable gas.

-Hydrogen is a major component of water.

- Hydrogen can be used as fuel.

Hydrogen is used in the chemical industry to make many types of products.

The folk dance named 'Terah Tali' is traditionally associated with Rajasthan.

1. Performed by women of the Kamad caste

2. It is done by tying 13 Manjeeras on different body parts.

3. Manjiras are played with rhythm

4. Padarla village of Pali district is the main centre of

5. This folk dance is performed in Baba Ramdev temple.

1. Sir S.P. was the President of the Indian National Congress during the session of 1915. Sinha was. This was the 32nd session of the Congress, held in Mumbai from 1 to 4 December 1915. At this session, Congress reiterated its demand for self-rule for India and pressed for greater rights from the British government.

2. Some of the important resolutions passed in the 1915 session included:

- Demand for self-rule for India

- Pressure for more rights from the British government

- Demand for greater representation of Indians in the British Army

- Demand for improvement in education and employment opportunities for Indians

1. Mercury poisoning is responsible for which of the following diseases called 'Mad Hatter's Disease'?

2. Mad Hatter's Disease is a form of mercury poisoning that affects the brain and nervous system.

3. There is a risk of mental and behavioural changes, such as confusion, hallucination, and irritability etc. in this disease.

1. Rickets is a bone disease caused by vitamin D deficiency.

2. Due to rickets, the absorption of calcium and phosphorus in the bones decreases.

3. The solution to protect exclusively breastfed babies from this disease is Vitamin D supplements.

1. Induced current is highest when the direction of motion of the coil is perpendicular to the magnetic field.

1. The change in velocity of an object at equal time intervals is called uniform acceleration.

2. A freely falling object is an example of uniform acceleration.

1. Explain the structure and reproductive system of algae in 1935. It was from F.  E. Fritch.

2. The study of algae is known as phycology. It is also known as Algology.

3. Algae are largely aquatic (both fresh and sea water) organisms, which are chlorophyll bearing, simple, thalloid and autotrophic in nature.