• A. 90
• B. 120
• C. 109.5
• D. 180

Answer: Option B

Explanation:

• A. $s{p}^2,sp$
• B. $sp,s{p}^3$
• C. $s{p}^2$
• D. $sp,s{p}^2,s{p}^3$

Answer: Option C

Explanation:

• A. $HCHO$
• B. $C{H}_{3}CHO$
• C. $C{H}_{3}COC{H}_3$
• D. $C{H}_{3}OH$

Answer: Option B

Explanation:

• A. $C{u}^{2+}$
• B. $I_2$
• C. $I^{-}$
• D. $K^{+}$

Answer: Option C

Explanation:

• A. +2.70 V
• B. -2.70 V
• C. +2.02 V
• D. -2.02 V

Answer: Option B

Explanation:

• A. $4d^{7}5s^2 {\text{এবং 4d}}^7{\text{5s}}^0$
• B. $3d^{3}4s^1 {\text{এবং 4d}}^5{\text{4s}}^0$
• C. $4d^{7}3s^2 {\text{এবং 3d}}^7{\text{3s}}^0$
• D. $3d^{7}4s^2 {\text{এবং 3d}}^{7}4{\text{s}}^0$

Answer: Option D

Explanation:

• A. -1.2 V
• B. -0.4 V
• C. 0.4 V
• D. 1.2 V

Answer: Option A

Explanation:

• A. TNB
• B. DDT
• C. TNT
• D. 2, 4-DNPH

Answer: Option B

Explanation:

• A. $1.6\times {10}^{-11}$
• B. $3.2\times {10}^{-12}$
• C. $3.2\times {10}^{-11}$
• D. কোনোটিই নয়

Answer: Option C

Explanation:

• A. $\left[C{a}^{2+}\right]{\left[O{H}^{-}\right]}^2$
• B. $\left[C{a}^{2+}\right]2\left[O{H}^{-}\right]$
• C. $\left[C{a}^{2+}\right]\left[O{H}^{-}\right]$
• D. $2{\left[C{a}^{2+}\right]}^2\left[O{H}^{-}\right]$

Answer: Option A

Explanation:

• A. $2.5x{10}^{-5}mo{l}^2{L}^{-2}$
• B. $3.5x{10}^{-5}mo{l}^2{L}^{-2}$
• C. $1.25x{10}^{-5}mo{l}^2{L}^{-2}$
• D. $3.75x{10}^{-5}mo{l}^2{L}^{-2}$

Answer: Option A

Explanation:

• A. 22.4 L
• B. 0.56 L
• C. 5.6 L
• D. 11.2 L

Answer: Option B

Explanation:

• A. 20.0 g
• B. 40.0 g
• C. 80.0 g
• D. 35.5 g

Answer: Option A

Explanation:

• A. $10g{L}^{-1}$
• B. $110g{L}^{-1}$
• C. $101g{L}^{-1}$
• D. $100g{L}^{-1}$

Answer: Option D

Explanation:

• A. 180°
• B. 107°
• C. 104.5°
• D. 120°

Answer: Option D

Explanation: