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Which of the following metal does not undergo corrosion due to the formation of oxide layer -

A bomb explodes on the Moon. How long will it take for the sound to reach the Earth?

If the Volume of a cubic cell is 10^-30 metre3 then its lattice parameter is :

Orientation of atomic orbital is controlled by

The colour of the carrots is due to the presence of

The sky seems blue as of

Which of the following metal forms Amalgam with other metals?

A bomb explodes on the moon. You will hear its sound on earth after _

Colloids are purified by

If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated -

Orology’ is the study of

The colour of the ocean seems to be blue as the sunlight falling on it is

The slope of a velocity - time graph gives

Which among the following hormone has a stimulatory effect on the heart?

Which of the following metal has least melting point?

A bomb is dropped at a point from a moving aeroplane. The pilot observes that

Colour imparted to the Bunsen flame by strontium salt is

If water in a lake were to behave like other liquids, then in extremely cold weather it would freeze

Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

The colour of violet glass is due to the presence of

The so-called fourth state of matter refers to

Which among the following is a character of Chloroplast which makes them qualified to self replication?

Which of the following metal ion is needed to form poly-ribosomes from ribosomes?

A bottle of sodalime is grasped by the neck swung briskly in a vertical circle, Near which portion of the bottle do the bubbles collect -

Combustion is a

If water smells bad, then that odour can be removed by adding

Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?

The commercial name for calcium hydride is

The solubility of the alkali metal carbonates

Which among the following is a millet?

Which of the following metal is extracted from sea water -

A car of 500 kg mass travelling at 25 m/sec applies brakes and its speed is reduce to 5 m/sec in 5 sec. Find the force of repulsion ?

Concave lens always form image

If we look at the sky from the moon, what will it look like?

The commonly used coolant in refrigerators is

The source of energy that causes the least global warming is

Which of the following metal is the heaviest in periodic table among the following

A catalyst is a substance which

Concave Lens always forms the image

If we move from surface to centre of a charged metal sphere the electric field will be -

Oxygen which is vital for life is a product of photosynthesis comes from

The compound used in prickly heat powder to prevent excessive sweating is

The source of oxygen generated during photosynthesis is:

Concentration of a material which is lethal to 50% animal is called

If you float on your back on water, your weight is-

The correct group of animals that suffer from the Foot Mouth disease is as follows

The spermatozoa contain an acrosome anteriorly, the function of which is

Which among the following is called antisterility vitamin ?

A closed vessel containing some gas at atmospheric pressure and room temperature is placed in a fast moving train. The temperature of the gas will

Conduction band electrons have more mobility than holes as they