Aqueous solution of a metallic nitrate X reacts with NH₄OH to form Y which dissolves in excess NH₄OH. The resulting complex is reduced by acetaldehyde to deposit the metal. X and Y, respectively, are:

1) Cs(NO₃) and CsOH
2) Zn(NO₃)₂ and ZnO
3) AgNO₃ and Ag₂O
4) Mg(NO₃) and Mg(OH)₂

On reaction of chlorobenzene with acetyl chloride in presence of anhydrous AICl₃, the major product formed is:

C₃?H8(g)+5O₂(g) → 3CO₂?(g)+4H₂?O(l)

The combustion of propane, C₃?H8?(g), proceeds according to the equation above. In the complete combustion of 44.0 grams of propane, determine how many grams of water will be formed.

1) 4.50g

2) 80g

3) 44.0g

4) 72.0g

Amount of oxalic acid present in a solution can be determined by its titration with KMnO₄ solution in the presence of H₂SO₄. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl

1) gets oxidised by oxalic acid to chlorine
2) furnished H⁺ ions in addition to those from oxalic acid
3) reduces permanganate to Mn²⁺
4) Oxidation oxalic acid to carbon dioxide and water

The maximum number of isomers (including stereoisomers) that are possible on monochlorination of the following compound, is


1) 4
2) 7
3) 6
4) 8

A certain laser transition emits 6.37×10¹⁵ quanta per second per square metre. Calculate the power output in joule per square metre per second. Given λ = 632.8 nm.

1) $$3.14\times 10^{-19}Jm^{-2}$$ $$sec^{-1}$$
2) $$4\times 10^{-3}Jm^{-2}$$ $$sec^{-1}$$
3) $$2\times 10^{-3}Jm^{-2}$$ $$sec^{-1}$$
4) $$4.03\times 10^{9}Jm^{-2}$$ $$sec^{-1}$$

The compound if contains an even number 'n' of chiral carbons, but the molecule can be divided into two equal and si,ilar halves , then how many optical active form it will have :

1) 2ⁿ
2) 2⁽ⁿ⁻¹⁾
3) 2^(n−1)/2
4) 2⁽ⁿ⁻¹⁾−2^(n−1)/2

Specific volume of cylindrical virus particle is 6.02 × 10^-2 cc/gm whose radius and length are 7 Å and 10 Å respectively. If N_A= 6.02 ×10²³, find molecular weight of virus.
1) 15.4 kg/mol
2) 1.54 × 10⁴ kg/mol
3) 3.08 × 10⁴ kg/mol
4) 3.08 × 10³ kg/mol

Which of the following can be used as adsorbent in adsorption chromatography?

1) Silica

2) Alumina

3) Cellulose

4) All of these

On a ship sailing in a pacific ocean where temperature is 23.4^oC, a balloon is filled with 2L air. What will be the volume of the balloon when the ship reaches Indian Ocean, where temperature is 26.1^oC

1)1.37L
2) 4.0 L
3) 2.02L
4) 2.94L