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Atomic radius is measured in:

Which of the following method is used to separate mixture of two miscible liquids?

When NaCl is dissolved in water, it forms $N{a}^{+}$ and $C{l}^{-}$ ions. The $N{a}^{+}$ ions will be attracted by which part of water?

Consider the following two situations, in which case the level of water will be higher?

Which of the two diffuses slower : bromine vapour into air or copper sulphate into water ?

Choose the correct option, regarding IUPAC names?

Periodic table with names

Demineralised water is obtained by-

Latent heat of vaporization of two liquids a and b is 100 joule/kg and 150 joule/kg respectively which one can produce more cooling effect and why?

What is the chemical name of quick lime?

Particles in water at 0°c have more energy as compared to particles in ince at the same temperature.why?

Distillation is used to purify metals with

Mass percentage of Na in $N{a}_{2}C{O}_3$ is __________

(a) A metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.

(b) Write a balanced equation for the reaction occuring in (a).

If the atomic radius of Chlorine is considered to be x, and that of Aluminium is considered to be y. What can you comment about the value of $\frac{x}{y}$?

What is the valency of carbon in $C{H}_4$ ?

10 grams of silver chloride undergoes a decomposition reaction to form silver and chloride. What will be the rate of the reaction if 8 g of silver chloride has decomposed completely in two minutes?

How is air dissolved in water different from ordinary air ?

Conversion of solid to Vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.

Which of the following represents the solubility of sugar in water at ${20}^{\circ }C?$

(a) 21 g (b) 204 g (c) 37 g (d) 164 g

Why is a completly dissolved solution still flexible like water as we know that the space between the molecules of solvent is occupied by solute molecules so it should be like solid

What is the general name of the materials which contain at least two pure substances and show the properties of their constituents ?

How many times a proton is heavier than an electron?

In isobars both chemical and physical property is different and in isotopes only chemical property is different why explain

How do we convert the moles of a substance into grams?

What are the solids which do not show the same physical features in all directions known as?

a)Pseudo solids

b)Anisotropic

c)Amorphous

d)Isotropic

Sugar and salt kept in different jars gain the shape of their respective jars. Are they solid? justify your answer.

Why the density of ice is less than water?

How can we distribute atoms in shell

I want to know how to find molecular mass and atomic mass .

If atomic mass of an element is having isotopes.

Your Sincerely

ABHYODAYA

Which of the following is an example of combination reaction between two compounds?

Several blocks of magnesium are fixed to the bottom of a ship to

The equivalent weight of $MnS{O}_4$ is half its molecular weight when it is converted to
(IIT-JEE, 1988)

Decomposition of H₂O₂ yields:

Very often we come across mass numbers given out in decimals. Could you guess why?

An atom of an element has two electrons in the M shell. What is the (a) atomic number (b) number of protons in this element ?

In the following radioactive equation:

What is the relation between the parent (the first) element and the last (daughter) element?

Name the subatomic particle whose relative charge is:
(a) +1
(b) -1
(c) 0

Corrosion in case of iron is known as:

In a chromatographic technique, the appearance of different colours on the filter paper shows the presence of:

How can you demonstrate that water vapour is present in the air