Chemistry Part-I - NCERT Solutions - GeniusJnr

Which of the following data illustrates the law of conservation of mass?

Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°.

In a sample of H₂O₂ , each 100 mL solution contains 68 mg of H₂O₂. The molarity of the solution is

In quadrilateral ACBD, AC = AD and AB bisects ∠A (See the given figure). Show that ΔABC ≅ ΔABD. What can you say about BC and BD?

The number of molecules of a gas having volume 1.12 × 10^-7 cm³ at STP is

The volume of CO₂ released at STP on heating 9.85 g of BaCO₃ assuming complete dissociation is

The sulphate of a metal X contains 25% of X. This sulphate is isomorphous with ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$​. The atomic mass of X is

Write all the other trigonometric ratios of ∠A in terms of sec A.

A compound possesses 8% sulphur(Gram Molecular Mass of S: 32g/mol) by mass. The least molecular mass is:

Molarity of liquid HCl with density equal to 1.17 g/cm³ is

The law of multiple proportions is illustrated by

l and m are two parallel lines intersected by another pair of parallel lines p and q (see the given figure). Show that ΔABC ≅ ΔCDA.