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Homogeneous mixture are known as? Write their properties

A beaker contains $6.02\times {10}^{24}$ molecules of water . How many mole of atoms is this?

$Cu(OH{)}_2+HCl\to X+Y$

What are X and Y respectively?

Which type of reaction is being used in the experiment of verifying the law of conservation of mass?

The second ionization potentials in electron volts of oxygen and fluorine atoms are respectively given by -

An oxidizing agent is a substance which:

A = Loses oxygen

B = Gains hydrogen

C = Gains oxygen

What temperature would be necessary to double the volume of a gas, initially at S.T.P., If the pressure is decreased to 50%

What is the oxidation number of Mn in $KMn{O}_4$?

Table salt becomes sticky on exposure to humid air during the rainy season. Explain.

What is meant by aqueous tension ? How is the pressure exerted by a gas corrected to account for aqueous tension?

Match the following:

$\begin{array}{cccc}\left(i\right)& \text{Water}& \left(A\right)& \text{Compound}\\ \left(ii\right)& \text{Hydrogen}& \left(B\right)& \text{Element}\\ \left(iii\right)& \text{Salt}& & \\ \left(iv\right)& \text{Gold}& & \\ \left(v\right)& \text{Carbon dioxide}& & \\ \left(vi\right)& \text{Iron}& & \end{array}$
The correct pairs are:-

When water is converted to ice, its volume ___ and density ____.

What is meant by saying that diamond and graphite are alloptropic form of carbon. Salt solution ( salt mixed in water) is true solution. What is meant by this statement and what are true solutions.

Is sodium and potassium a soft metal

Which of the following groups follows Dobereiner's Law of Triads?

A covalent molecule having two lone pair of electrons

Pure zinc is not used for preparation of hydrogen. Why?

Which method is better for recovering sugar from sugar solution, evaporation or crystallisation? Give the reason for your answer.

The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :

(a) nitrogen, oxygen, argon (b) nitrogen, argon, oxygen

(c) argon, oxygen, nitrogen (d) oxygen, argon, nitrogen

Name the process by which a drop of ink spreads in a beaker of water.

Find the solubility of a sparingly soluble salt, $BaS{O}_4$ in $0.02M$ $N{a}_{2}S{O}_4$ solution ?
$(K_{sp}$ for $BaS{O}_4=1.1\times {10}^{-10})$

Which of the following have the same molecular formula?

The alpha particles carry______units of positive charge.

Determine the oxidation number of sulphur in $H_{2}S{O}_4$.

Identify the Arrhenius acids among the following:

1. NaCl 2. HCl 3. $Cu(OH{)}_2$ 4. NaOH

5. $H_{2}S{O}_4$ 6. $HN{O}_3$ 7. KOH

The volume occupied by 10g of Oxygen at $0^{o}C$ and 2 atm pressure will be approximately

How do we separate two missible liquids with same boiling point?

Pneumoconiosis is caused by inhalation of -

Why are electrons the only subatomic species which can change their positions and give rise to charged atoms or ions?

How and why electrons revolve around the nucleus?

Identify the type of the underlined phrase.

The basket with fruits fell on the floor.

Give a chemical test for :

(a) an oxidizing agent

(b) a reducing agent.

Atoms have electrons, protons, and neutrons as the fundamental particles. The electrical charge of an atom will be

Which of the following elements have the ability to behaves as both oxidising and reducing agents?

Name one pair of liquids which can be separated by using a separating funnel.

If a glass of water is spilled on floor, it disappears within no time. Why?

Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-Silicon and Eka-Aluminium.
Name the elements which have taken the place of these elements

What is the observation that can be made when calcium reacts with $H_{2}O$?

Name the compounds of sulphur that cause air pollution. Also state the harmful effects of sulphur compounds.

The four atomic species can be represented as follows. Out of these, the two species which can be termed isobars are :

(i) ${}_{60}^{201}X$ (ii) ${}_{61}^{200}X$

(iii) ${}_{58}^{200}$ (iv) ${}_{60}^{203}X$

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (i) and (iii)

(d) (i) and (iv)