Some Basic Concepts of Chemistry PYQs - Last 10 Years
WB JEE / Chemistry / Physical Chemistry / 18 recent questions
ChemistryPhysical Chemistry2016-2025
Practice 18 WB JEE Chemistry questions from Some Basic Concepts of Chemistry. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2017-2025
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Last 10 Years Some Basic Concepts of Chemistry Questions
Showing 18 of 18 filtered questions.
1Some Basic Concepts Of Chemistry
How many oxygen atoms are present in 0.36 g of a drop of water at STP?
MCQ+1 / -0.252025
2Some Basic Concepts Of Chemistry
63 g of a compound (Mol. Wt. = 126) was dissolved in 500 g distilled water. The density of the resultant solution as 1.126 g/ml. The molarity of the solution is
MCQ+2 / -0.52023
3Some Basic Concepts Of Chemistry
Arrange the following in order of increasing mass
I. 1 mole of N\(_2\)
II. 0.5 mole of O\(_3\)
III. \(3.011\times10^{23}\) molecules of O\(_2\)
IV. 0.5 gram atom of O\(_2\)
I. 1 mole of N\(_2\)
II. 0.5 mole of O\(_3\)
III. \(3.011\times10^{23}\) molecules of O\(_2\)
IV. 0.5 gram atom of O\(_2\)
MCQ+1 / -0.252023
4Some Basic Concepts Of Chemistry
1 mL of water has 25 drops. Let N0 be the Avogadro number. What is the number of molecules present in 1 drop of water ? (Density of water = 1 g/mL)
MCQ+1 / -0.252022
5Some Basic Concepts Of Chemistry
A metal (M) forms two oxides. The ratio M:O (by weight) in the two oxides are 25:4 and 25:6. The minimum value of atomic mass of M is
MCQ+1 / -0.252022
6Some Basic Concepts Of Chemistry
\({C_6}{H_6}(liq) + {{15} \over 2}{O_2}(g) \to 6C{O_2}(g) + 3{H_2}O(liq)\)
Benzene burns in oxygen according to the above equation. What is the volume of oxygen (at STP) needed for complete combustion of 39 gram of liquid benzene?
Benzene burns in oxygen according to the above equation. What is the volume of oxygen (at STP) needed for complete combustion of 39 gram of liquid benzene?
MCQ+1 / -0.252022
7Some Basic Concepts Of Chemistry
How much solid oxalic acid (Molecular weight 126) has to be weighed to prepare 100 ml. exactly 0.1 (N) oxalic acid solution in water?
MCQ+1 / -0.252022
8Some Basic Concepts Of Chemistry
The mole fraction of a solute in a binary solution is 0.1 at 298 K, molarity of this solution is same as its molality. Density of this solution at 298 K is 2.0 g cm\(-\)3. The ratio of molecular weights of the solute and the solvent (Msolut...
MCQ+2 / -0.52021
9Some Basic Concepts Of Chemistry
What will be the mass of one atom of 12C?
MCQ+1 / -0.252020
10Some Basic Concepts Of Chemistry
Which of the following has the largest number of atoms?
MCQ+1 / -0.252020
11Some Basic Concepts Of Chemistry
The mole fraction of ethanol in water is 0.08. Its molality is
MCQ+1 / -0.252020
12Some Basic Concepts Of Chemistry
5 mL of 0.1 M Pb(NO3)2 is mixed with 10 mL of 0.02 M KI. The amount of PbI2 precipitated will be about
MCQ+1 / -0.252020
13Some Basic Concepts Of Chemistry
At S.T.P. the volume of 7.5 g of a gas is 5.6 L. The gas is
MCQ+1 / -0.332019
14Some Basic Concepts Of Chemistry
In the crystalline solid MSO4 . nH2O of molar mass 250 g mol\(-\)1, the percentage of anhydrous salt is 64 by weight. The value of n is
MCQ+1 / -0.332019
15Some Basic Concepts Of Chemistry
A metal M (specific heat 0.16) forms a metal chloride with 65% chlorine present in it. The formula of the metal chloride will be
MCQ+2 / -0.52018
16Some Basic Concepts Of Chemistry
How many moles of electrons will weigh one kilogram?
MCQ+1 / -0.332018
17Some Basic Concepts Of Chemistry
In a flask, the weight ratio of CH4(g) and SO2(g) at 298 K and 1 bar is 1 : 2. The ratio of the number of molecules of SO2(g) and CH4(g) is
MCQ+1 / -0.252017
18Some Basic Concepts Of Chemistry
Which of the following has the dimension if [\(M{L^0}{T^{ - 2}}\)] ?
MCQ+1 / -0.252017