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A equilibrium mixture of the reaction, 2H2S=2H2+S2(reversible reaction) had 0.5moleH2S,0.1 mol H2,0.4 mole S2in 1 litre vessell.the value of equilibrium constant in.mole/life a)0.004 b)0.008 c)0.016

information not convinced by balanced chemical reaction is ?

Which of these is not a chemical change?(a) changing of ice to water(b) changing of milk to curd(c) rusting of iron(d) both a and b

Why does iron react to atmosphere

Caesium has low melting point. - True or False?

28.The correct order of stability of Al+,Al+2,Al+3.

The iron (iii) oxide, Fe_2O_3 reacts with CO to give iron and CO_2 Fe_2O_3 + 3CO →2Fe +3CO_2 The reaction of 480.0 g Fe_2O_{} with excess of CO yields 252.0 g iron. Thus.percentage yeld is (Fe = 55) a. 100.0% C. 75.0% b. 91.2% d. 50.0%

For a reaction, A+B→C+D, if the concentration of A is doubled without altering the concentration of B, the rate gets doubled. If the concentration of B is increased by nine times without altering the concentration of A, the rate gets tripled. The order of reaction is:

Why magnesium does not react with water at room temperature ??

Calculate gram atoms of Carbon present in 2 gram molecules of C6H12O6(GLUCOSE)

The main component of LPG is:

Which among the following materials are used to reduce surface tension of water?

Question 9 (a) True or false? A mixture of milk and water can be separated by filtration.

how much sodium sulphate has to be added in hundred gram of water to make the concentration of sodium 20%?

Name some additives that can be added to detergents.

Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.​

Given below is a table containing a few metals and nonmetals with exceptional properties. Fill the dark spaces by identifying X, Y and Z in the table.

Which of the following tree is suggested to be grown near sewage ponds?

how to know whether the given compound follows the Huckel rule and is aromatic compoun??

Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words.(D) 1 : Thorough washing 2 : Animal fibre 3 : Long thread like structureAcross(A) 1 : Keeps warm 2 : Its leaves are eaten by silkworms 3 : Hatches from egg of moth

The enthalpy of vaporisation of water at 100^0C is 40.63KJ/mol.The value △ E for this process would be :

Match list I with list II:List I (Metal ion)List II (Group in qualitative analysis)(a) Mn2+(i) Group III(b) As3+(ii)Group IIA(c) Cu2+(iii) Group IVd)Al3+ (iv) Group IIB

Explain the working principle of distillation. Explain with the help of an example. [3 MARKS]

Explain monatomic, diatomic, and triatomic molecules.

For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is

from the following molar conductivities at infinite dilutionmolar conductivity of AL2(SO4)3 = 858 S cm2 mol -1 NH4OH = 238.3 S cm 2 mol -1 NH2(SO4)= 238.4 S cm2 mol -1 Calculate molar conductivity for AL(OH)3

Why do visual indicators show a a change in colour when introduced to an acidic or basic or medium

Complete the following food chain:Grass → Insects → Frog → ____→ Eagle

Were do we use bromine in our daily life?

Why do some fruits taste sour? Which acid is present in curd? [2 MARKS]

Enthalpy of sublimation of iodine is 24 cal/g at 200^° C. If specific heat of I2(s)and I2(vap) are 0.055 and 0.031 cal/g/K respectively then find enthalpy of sublimation of iodine at 250^° C?

Why is not simply carbon dioxide filled in Soda acid type Fire extinguisher instead of a solution of sulfuric acid and sodium bicarbonate solution?

What is a neutralization reaction? Explain with an example.

Galvanisation is the process of coating iron with ___.

1: Decomposition of solid ammonium chloride is associated with____________ change.

In the formation of sulphur trioxide by contact process, 2SO2+O2⇌2SO3, the rate of reaction was measured as −d[O2]dt=2.5×10−4 mol L−1sec−1 the rate of reaction expressed in terms of SO3 will be:

N2+3H2------>2Nh3.5 moles of Nn2 and 5 moles of H2 rae heated in a 5 dm3 container.At equilibrium, 60% of H2 is converted to animonia. The total number of moles of the reactants andproducts in equilibrium mixture is

When was atom found ?

If a stone attracts the Earth, why can't the motion of Earth towards the stone be observed?

When aq. AgNO3 is electrolysed using Pt electrodes if 3.2 g of O2 is liberated at the anode, the amount Ag that will be deposited at the cathode in grams is (at wt. of Ag = 108)

If we have reactants vinegar , water, lime juice and boil it what will be the product ? Present it in chemical reaction with chemical symbols.

Ratio of the number of lone pairs to the average oxidation state of S in S4O2−6 is:

When an acid reacts with a base, what happens to the temperature of the surroundings?

___tells us the number of atoms of each element in a compound.

In BrF3 molecule the lone pairs occupy equitorial position to minimize

Why electron conc. is not written in Nerst equation?

Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.