Give two ways in which rail transport is useful for the people of India.

The diagram below shows a claw hammer used to remove a nail:

1. To which class of lever does it belong?
2. Give one more example of the same class of lever mentioned by you in (i) for which the mechanical
...

Name the gas that is produced in - Action of cold and dilute nitric acid on copper

The drying agent used to dry HCl gas is:

A. Conc. H₂SO₄

B. ZnO

C. Al₂O₃

D. CaO

Name the soil which is good for cultivation of sugarcane

State one observation: A small piece of zinc is added to dilute hydrochloric acid

Briefly explain the following term: Hormone

With reference to the National Movement from 1930 to 1947, answer the following: State any three features of the Programme of the Civil Disobedience Movement launched in 1930.

Ionisation potential increases across a period, from left to right.

NaOH Solution when added to Solution (C) gives white ppt which is insoluble in excess.

Briefly explain: The trees in Monsoon Deciduous forests, shed their leaves for about 6-8 weeks during March and April.

The diagram below represents a process in plants.
The setup was placed in bright sunlight. Answer the following questions:

i. Name the physiological process depicted in the diagram. Why was oil added...

Match the gases given in column I to the identification of the gases mentioned in column II:

Pulmonary semilunar valve

Mention the exact location of the following:

Give the geographic term for each of the following:

1. Non-mulberry silk produced in Madhya Pradesh.
2. Rejected cane after crushing.
3. The rearing of silk worms to obtain silk.

To increase the pH value of a neutral solution, we should add:

1. an acid
2. an acid salt
3. an alkali
4. a salt