AIPMT-PRELIMS Chemistry Some Basic Concepts of Chemistry Class 11 Questions

The number of atoms in 0.1 mol of a triatomic gas is (N_A = 6.02 × 10²³ mol⁻¹)

What volume of oxygen gas (O₂) measured at 0°C and 1 atm, is needed to burn completely one litre, of propane gas (C₃H₈) measured under the same conditions ?

How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl ?

Volume occupied by one molecule of water (density = 1g cm⁻³) is :

Which of the following will give a pair of enantiomorphs?

The nuclei of which one of the following pairs of nuclei are isotones?

The maximum number of molecules is present in:-

Which has maximum molecules :-

Percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt = 78.4) then minimum molecular weight of peroxidase anhydrous enzymes is : -

Sp. vol. of cylinderical virus particle is 6.02 × 10⁻² cc/gm. Whose radius and length are 7 Å & 10Å respectively. If Nₐ = 6.02 × 10²³. Find mol. wt. of virus : -

Volume of CO₂ obtained by the complete decomposition of 9.85 gm. BaCO₃ is :