HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

How many moles of acetic anhydride will be required to form glucose pentaacetate from 2M of glucose?

(a) 2

(b) 5

(c) 10

(d) 2.5

Formalin is 40% aqueous solution of:

(a) Methanal

(b) Methanoic acid

(c) Methanol

(d) Methanamine

What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3^rd of tetrahedral voids?

What happens when the external pressure applied becomes more than the osmotic pressure of solution?

Blood cells are isotonic with 0.9% sodium chloride solution. What happens if we place blood cells in a solution containing

(i) 1.2% sodium chloride solution?

(ii) 0.4% sodium chloride solution?

How much charge is required for the reduction of 1 mol of Zn²⁺ to Zn?

How will you distinguish between the following pair of terms?

Tetrahedral and octahedral voids

Define the term ‘enthalpy’.

What will happen to the internal energy if work is done by the system?

How is phosphine prepared using the following reagent ?
HCl

Define osmotic pressure.

What happens when glucose is treated with hydroxylamine?

How is terylene prepared?

Write the Nernst equation and explain the terms involved.

H₂O is liquid while H₂S is gas at room temperature. Explain.

Maltose is a 

(a) Polysaccharide

(b) Disaccharide

(c) Trisaccharide

(d) Monosaccharide

Identify 'A' and 'B' and rewrite the reactions

Enlist the properties of glucose that can not be explained on the basis of open chain structure of it

Write the environmental effects of DDT.

How is phosphine prepared using the following reagent?

H₂SO₄