Chemistry NCERT Exemplar Solutions Class 11th Chapter Eleven

Base is tert-butoxide thus favours elimination with 3° alkyl halide and gives alkene

Ethylidene chloride is

1, 1 Dichloro ethane.

Kindly consider the following figure

(A) and (C) are staggered conformation. In (A) dihedral angle is 60° and in (C) dihedral angle is 180°.

Dihedral angle is angle between two specified groups.

In (C) it has maximum angle.

O^-2 & Mg⁺² are isoelectronic with Al⁺³

This is a Assertion and Reason Type Questions as classified in NCERT Exemplar

(B)

Silicones are a class of silicon polymers that contain the repeating unit (-R 2 SiO-). Silicones are water repellent in nature because they are surrounded by non-polar alkyl groups, so A and R are both correct, but R is not the correct explanation of A.

This is a Assertion and Reason Type Questions as classified in NCERT Exemplar

(A)

In aluminium silicate, silicon is doped with group 13 elements and as aluminium is trivalent and silicon is tetravalent so, on replacing aluminium by Silicon, a negatively charged structure will be obtained. Both the statements assertion and reason are correct and reason is the correct explanation of assertion.

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (b), (ii) → (c), (iii) → (b), (iv) → (a) (v)→ (b) (vi)→ (c)

This is a Matching Type Questions as classified in NCERT Exemplar

(i)→ (c) (ii)→ (d) (iii)→ (a) (iv)→ (e) (v)→ (b)

This is a Matching Type Questions as classified in NCERT Exemplar

(i)- (e), (ii)- (c), (iii)- (d), (iv)- (a) & (b)