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A boy was carrying out an experiment on the solubility of a gas in the water.He took a solute gas A and dissolved it in a liquid solvent(Water) B at a particular temperature T and pressure P.At that point he got some solubility value S. Later, he observed the value of solubility by

i)increasing temperature of water from T to T' and

ii)decreasing pressure on water surface from P to P'.

He got the new solubility S'.Then what is the relationship between former solubility S and latter solubility S'?

What is quantum field theory?

What is quantum mechanics?

It is required to reduce the volume of a gas by 20% by compressing it at a constant pressure. To do so the gas has to be cooled. If the gas attains a final temperature of 157 degrees C, find the initial temperature of the gas.

The compound/compounds which acts as a positive catalyst is/are

$1.5276g$ of $CdC{l}_2$ was found to contain $0.9367g$ of $Cd$. Atomic weight of $Cd$ is

Which property is exhibited by metals?

In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

In the diagram given below, $\frac{BO}{OA}=2$. Find the length of AB.

Which element will form a cation in a salt?

What is the electronic configuration of chromium? Why is it different from other elements?

What are the all factors affecting boiling and melting point of all the matters

Nitrogen could be prepared by

___ mole/s of oxygen atoms are present in 36 gms water.

Why does water at 0 degree Celsius have more energy than ice at the same temperature? Explain your answer in terms of latent heat of vaporization

The element with atomic number 55 belongs to which of the blocks in the periodic table-

Explain why solids have fixed shape but liquids and gases do not have fixed shape

The idea of tiniest unit of matter was propounded by _________ in Vedic period in our country

Why atomic configuration start from K, not from A

In a chromatographic technique, a sample whose components needs to be separated is placed:

Which among the following has more atoms?

Non-metal generally form ________.

If the back of your hand is moistened with alcohol, you will find that it rapidly becomes dry. Why is it that while it is drying, your hand feels cool ?

What will be the products of reaction if methoxybenzene reacts with HI

_________is an example of solid in solid solution

A cold drinks

B German silver

C dust particles in air

D fog

Calculate the number of moles of $H_2$ in a sample containing $3.011\times {10}^3{H}_2$ molecules.

Ammonia and HCL are being preapred in two corners of a laboratry. Which gas will be deleated first by a student working in the middle of the laboratory? Explain

Which radical results in depletion of Ozone layer?

Coordinate bond is also called ___.

Which of the following pairs are isotopes? Give reasons for your choice:

(i) ${}_{26}^{58}A$, ${}_{28}^{58}B$ or (ii) ${}_{35}^{79}X$, ${}_{35}^{80}Y$

Which one of the following statements about $H_{3}B{O}_3$ is not correct ?

Complete the following table:

$$\begin{array}{cccccc}AtomicNumber& MassNumber& NumberofNeutrons& NumberofProtons& NumberofElectrons& NameoftheAtomicSpecies\\ 9& & 10& & & \\ 10& 32& & & & sulphur\\ & 24& & 12& & \\ & 2& & 1& & \\ & 1& 0& 1& 0& \end{array}$$

Please tell me whether this idea will work.

It is about using water as a fuel.

Using electrolysis we can separate hydrogen and oxygen from water.

So can we combine this and used as a fuel.

Or hydrogen on its own is a good fuel.

Where all can this idea be used?

Which statement describes coagulation value?

How many types of salts can be formed by phosphoric acid?

Which among the given substances is formed when hydrochloric acid reacts with a metal carbonate?

How many atoms are present in the following? [5 MARKS]
1. $H_{2}S$
2. $P{O}_4^{3-}$ ion
3. $CO$
4. $C_6{H}_{12}{O}_6$
5. $S{O}_4$

When water is cooled at a temperature X, it gets converted into ice at temperature X by a process called P. And when ice at temperature X is warmed, it gets reconverted into the water at the same temperature X in a process called Q.

(a) What is the value of temperature X in Kelvin?

(b) What is the process P known as?

(c) What is the name of energy released during process P?

(d) What is the process Q known as?

(e) What is the name of energy absorbed during process Q?

Which of the following gases are present in air?

Gram molecular weight of $N{H}_3$ is:

A solution contains 30 mL of ethyl alcohol mixed with 100 mL of water. The concentration of the solution in terms of volume by volume percentage is ___ %.