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In the above reaction, 5 g of toluene is converted into benzaldehyde with 92% yield. The amount of benzaldehyde produced is____ ×10-2 g

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Important Questions on Some Basic Concepts of Chemistry

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JEE Main
IMPORTANT

In the given reaction,

X+Y+3ZXYZ3

if one mole of each of X and Y with 0.05 mol of Z gives compound XYZ3. (Given : Atomic masses of X,Y and Z are 10,20 and 30amu, respectively). The yield of XYZ3 is____g.

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JEE Main
IMPORTANT
On complete combustion of 0.492 g of an organic compound containing C,H and O,0.7938 g of CO2 and 0.4428 g of H2O was produced. The % composition of oxygen in the compound is____. (Nearest Integer)
MEDIUM
JEE Main
IMPORTANT
2 L of 0.2MH2SO4 is reacted with 2 L of 0.1MNaOH solution, the molarity of the resulting product Na2SO4 in the solution is____millimolar.
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JEE Main
IMPORTANT

N2g+3H2g2NH3g20 g       5 g

Consider the above reaction, the limiting reagent of the reaction and number of moles of NH3 formed respectively are

HARD
JEE Main
IMPORTANT
In bromination of Propyne, with Bromine 1,1,2,2-tetrabromopropane is obtained in 27% yield. The amount of 1,1,2,2 tetrabromopropane obtained from 1 g of Bromine in this reaction is_____×10-1 g . (Molar Mass : Bromine =80 g/mol)
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JEE Main
IMPORTANT

Consider the reaction

4HNO3l+3KClsCl2g+NOClg+2H2Og+3KNO3s

The amount of HNO3 required to produce110.0 g of KNO3 is

(Given : Atomic masses of H,O,N and K are 1,16,14 and 39, respectively.)

HARD
JEE Main
IMPORTANT
A 1.84mg sample of polyhydric alcoholic compound 'X' of molar mass 92.0 g/mol gave 1.344 mL of H2 gas at STP. The number of alcoholic hydrogen present in compound 'X' is
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JEE Main
IMPORTANT
5 g of NaOH was dissolved in deionized water to prepare a 450 mL stock solution. What volume (in mL) of this solution would be required to prepare 500 mL of 0.1 M solution ? Given : Molar Mass of Na, O and H is 23, 16 and 1 g mol1 respectively