A solid spherical ball of radius 6 cm is melted and recast into 64 identical spherical marbles. Find the radius of each marble.

The solvent used to dissolve the chlorophyll pigments while testing a leaf for starch is Soda lime.

Rewrite the correct statement by changing the underlined words

Give geographical reasons for the following

1. Regular pruning is essential for tea bushes
2. Coffee beans are roasted
3. Millets are known as dry crops

Laboratory preparation of ammonia from ammonium chloride.

Inert gases do not form ions.

The compound formed when ethene reacts with Hydrogen is _______ . (CH₄, C₂H₆, C₃H₈)

Two metallic blocks P and Q having masses in ratio 2:1 are supplied with the same amount of heat. If their temperatures rise by same degree, compare their specific heat capacities.

Given below is a representation of a type of pollution.

Study the picture and answer the questions:

1. Name the type of pollution shown in the picture.
2. Name one source of this pollution.
3. How does this pollution
...

Define specific resistance and state its SI unit.

The distance between two bodies is doubled. How is the magnitude of gravitational force between them affected?

State the agricultural benefits derived from: The Westerly Depressions in Punjab.

Answer the following questions with respect to the electrolytic process in the extraction of aluminum:

1.  Identify the components of the electrolyte other than pure alumina and the role played by each.
2.  Explain
...

Name the following: An oil refinery in Bihar.

The necessity to maintain International peace led to the establishment of the United Nations Organisation. With reference to the statement, answer the following: Write any four functions of the...

Dry hydrogen chloride gas can be collected by ____ displacement of air. (downward / upward)

From the diagram given below, answer the questions that follow:

1. What kind of pulleys are A and B?
2. State the purpose of pulley B.
3. What effort has to be applied at C to just raise the load L=20kgf?...