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1.0 g of a non-electolyte solute (molar mass 250 g mol^(-1)) was dissolved in 51.2 g of benzene. If the K_(f) for benzene is 5.12 K kg mol^(-1), the freezing point of benzene will be lowerd by :

1.0 g of a non-electrolyte solute (molar mass 250 g "mol"^(-1)) was dissolved in 51.2 g of benzene. If the freezing point depression constant of benzene is 5.12 K kg "mol"^(-1), the lowering in freezing point will be

1.0 g of a mixture of carbonates of calcium and magnesium gave 240 cm^(3) of CO_(2) at STP. Calculate the percentage composition of the mixture.

10 g of a gas at NTP occupies a volume of 2 litres. At what temperature will the volume be double, pressure and amount of the gas remaining same ?

10 g of a mixture of BaO and CaO requires 100cm^(3)of 2.5 M HCl to react completely. The percentageof calcium oxide in the mixture is approximately (Given : molar mass of BaO= 153)

10 g of a metal gives 14 g of its oxide. The equivalent mass﻿ of its oxide and hydroxide will be respectively﻿

10 g of a hydrated salt of BaCI_2 was dissolved in one litre water. The solution was then treated with 1.65 litre of 0.05 N AgNO_3 till complete precipitation. The number of water molecules in hydrated salt are :

10 g of a gas at NTP occupies a volume of 2 litre. At what temperature will the volume of 2 litre. At what temperature will the volume be double, pressure and amount of the gas remaining same :

10 g mixture of KI and NaClO_(3) treated with 200 cc HCl gives a gas which absorbes in 40 ml of (N) /(10) sodium thiosulphate solution. Then the correct statement is//are

10 g CaCO_(3) were dissolved in 250 ml of 1 M HCl. What volume of 2 M KOH would be required to neutralise excess HCl ?

10 g CaCO_(3)on heating leaves behind a residue weighing 5.6 g. Carbon dioxide released into the atmosphere at STP will be

10 g atoms of an alpha-active radioactive isotope aredisintegrating in a sealed container. In one hour, helium gas collected at STP is 11.2 "cm"^3. The half-life of the radioactive isotope is

1.0 g an alloy of aluminium and magnesium when treated with excess of dilute HCl forms magnesium chloride and aluminium chloride and hydrogen collected over mercury at 0^(@)C has a volume of 1.20 L at 0.92 atmospheric pressure. Calculate the composition of the alloy.

10 dm^(3)of N_(2)gas and 10 dm^(3)of gas X at the same temperature contain the same number of molecules. The gas X is

10 dm^(3) of N_(2) gas and 10 dm^(3) of gas X at the same temperature and pressure contain the same number of molecules. The gas X is

10 dm^(2) of N_(2) gas and 10 dm^(3) of gas X at the same temperature contain the same number of molecules. The gas X is

10 cc of H_(2) O_(2)solution when reacted withKIsolution produced 0 . 5 g of iodine . Calculate the percentage purity of H_(2) O_(2)

10 cc of a liquid A were mixed with 10 cc of liquid B. The volume of the resulting solution was found to be 19.9 cc. What do you conclude?

10^(-6)M NaOH is diluted to 100 times. The pH of the diluted base is

An acid solution of pH = 6 is diluted 1000 times, the pH of the final solution becomes :

10^-6 M HCl is diluted to 100 times. Find its pH value.

10^(-6) M NaOH is diluted 100 times. The pH of the diluted base is

10^(-4)g ofgelatin is required to be added to 100 cm^(3)of a standard glodsolutionof justpreventits precipitation by theaddition of 1 cm^(3) of 10% NaCl solutionto it . Hence , the glod numberof gelation in mg is .

10^(-4)g of gelation is required to be added to 100 cm^(3) of a standard gold solution to just prevent its precipitation by addition of 1 cm^(3) of 10% NaCI solution to it . Hence the gold number of gelation in mg is

10^(-2)F charge can remove entrie Cl_2 from 100 ml of HCl solution. What is the P^(H) of the solution initially

10^-2 g atom of Ag can be oxidised to Ag^+ during the electrolsis of AgNO_3 solution using silver electrode by:

1 yoctometer is…………………..m whereas 1 yottametre is……………..m.

1 xx 10^(-3) mole of HCl is added to a buffer solution made up of 0.01 M acetic acid and 0.01 M sodium acetate. The final pH of the buffer will be (given pK_(a) of acetic acid is 4.75 at 25^(@)C)

1 xx10^(-3)mole of HCI is added to a buffer solution made up of 0.01 M acetic acid and 0.01 M sodium acetate. The final pH of the buffer will be given, PK of acetic acid is 4.75 at 25^@ C)

1% (wt./vol) solution of urea is isotonic with 3% (wt./vol.) solution of a non electrolytic solute . The mol. Wt. of solute is

1. Which of the following reaction will give 1-methoxy-4-nitrobenzene. (a) 4-nitro-1-bromobenzene + sodiummethoxide. (b) 4-nitrosodium phenoxide + bromomethane

1 volume of a gaseous compound consisting C,H,O on complete combustion in presence of 2.5 volume of O_(2) gives 2 vol. of steam and 2 volt. Of CO_(2), what is the formula of the compound if all measurements are made at NTP?

(1) underset((d)) overset(n-BuLi)toA+B (B does not contain pi bond) (2) Aoverset(Cl-CH_(2)OMe)(to)C Which is/are true for above reactions?

1% solution of phenol 40% aqueous solution or methanal, SO_2 solution Cl_2 solution H_2O_2 solution among them how many chemicals are disinfections.

1% sollution of Ca(NO_(3))_(2) has freezing point

_1 , r_2 , r_3 represents rate of cuclisation. Then relation between r_1, r_2 and r_3 is

1- propanol on oxidation give

1-propanol is obtained from C_(2)H_(5) MgI and what ?

1-propanol is converted into propene, which ofthe following agent is used ?

1-Propanol and 2-propanol can be distinguished by

1-propanol can be converted into 1-chloro propane by HCI in the presence of catalyst,

1-Propanol and 2- propanol can be distinguished by:

1-propanol and 2-propanol can be best distinquishedby

1-Propanal and 2-propanol can be best distinguished by

1 ppm = ……….. Mass of solute in 1 litre solution.

1- Phenylethanol can be prepared by the reaction of benzaldehydewith

1 - phenyl ethanoyl chloride on hydrolysis gives

10 g of a metal gives 14 g of its oxide. The equivalent mass of its oxide and hydroxide will be respectively