Which of the following processing does not convert a liquid into vapours?

Which cell organelle is involved in the formation of lysosomes?

When the distance that an object travels is directly proportional to the length of time it is said to travel with

A body is projected upwards with a velocity of 100 m/s. It will strike the ground in approximately

Newton meter is the unit of

___________ is the change of liquid state to solid state.

Making of a fruit salad with raw fruits is a .................. change.

The thallophytes, bryophytes and pteridophytes have naked embryos called ........... .

Life on earth depends on resources like soil, water and air and energy from the ................

There are....................nutrients essential for crops.

What is biodiversity

The gravitational force between two objects is F. How will the gorce change when the distance between them is reduced to 1/4 th?

What is decantation? explain.

How does an atom differ from a molecule?

In what respects cathode rays differ from positive or anode rays?

What do you mean by 'characteristics'? Explain with example.

A wooden slab starting from rest , slides down an inclined plane of length 10 m with an acceleration of 5 \(m/s^{ 2 }\) what would be its speed at the bottom of the inclined plane?

Show that the first law of motion can be mathematically stated from the mathematical expression for the second law of motion.

Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6 × 10²⁴ kg and of the Sun = 2 × 10³⁰ kg. The average distance between the two is 1.5 × 10¹¹ m.

Seema tried to push a heavy rock of 100 kg fro 200 s but could not more it.Find the work done by Seema at the end of 200 s.

Distinguish between particle velocity and wave velocity?

How are cultivation practices and crop yield related to weather?

Giving example, state the use of a solution, a colloid and a suspension in our daily life

Name the body which approves the nomenclature of elements and compounds.

(a) What are two adaptive features of birds?
(b) What is the scientific name of ostrich?

(i) State the Newton's second law of motion.
(ii) Express Newton's second law mathematically explaining the symbols used.
(iii) Define SI unit of force from this expressions.

A particle weighs 120 N on the surface of the earth. At what height above the earth's surface will its weight be 30 N? Radius of the earth = 6400 km.

What is reverberation?Write its one advantage and one disadvantage.How reverberation is reduced?

What is a fertilizer? Name two fertilizers. How is it different from manure?

Latent heat of evaporation of two liquids A and B is 100 J/kg and 150 J/kg respectively.Which can produce more cooling effect and why?

What are the three differences between plants and animals?

What are the differences between the mass of an object and its weight?