Abani Kanta Sir

Try to answer the given question.

Identify which functional group is not present in the given following compounds ?

How many secondary hydrogen atoms are present in the following compounds ?

Sucrose is made up to
A. glucose and glucose
B. glucose and fructose
C. fructose and fructose
D. galactose and glucose.

What is the IUPAC name of CH₂=CH-CH₂-Br?
(A) Propene bromide
(B) 3-Bromoprop-1-ene
(C) 1-Bromoprop-2-ene
(D) Allyl bromide

Sodium metal is always kept under oil because it
A. is reduced by atmospheric nitrogen
B. readily reacts with water
C reacts with oxygen and carbon(IV)oxide
D. reacts vigorous on exposure to air.

“Hybridization of carbon atoms in ethyne (C₂H₂) is:”

Options:

A) sp
B) sp²
C) sp³
D) dsp²

“Unit of rate constant for a first order reaction is:”

Options:

A) mol L⁻¹ s⁻¹
B) s⁻¹
C) mol² L⁻² s⁻¹
D) L mol⁻¹ s⁻¹

“Which element has the highest electronegativity?”

Options:

A) Oxygen
B) Nitrogen
C) Fluorine
D) Chlorine

“For an exothermic reaction, the value of enthalpy change (ΔH) is:”

Options:

A) Positive
B) Negative
C) Zero
D) Infinite

“Number of molecules present in 2 moles of oxygen gas (O₂) is:”

Options:

A) 6.022 × 10²³
B) 1.204 × 10²⁴
C) 3.011 × 10²³
D) 9.033 × 10²³