• A. অম্লীয় $K_{2}C{r}_2{O}_7$দ্রবণ
• B. লঘু $H_{2}S{O}_4$
• C. ২,৪ -ডাইনাইট্রোফিনাইলহাইড্রাজিন
• D. ফেহলিং এর দ্রবণ

Answer: Option D

Explanation:

• A. 2
• B. 4
• C. 6
• D. 8

Answer: Option B

Explanation:

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

Answer: Option C

Explanation:

• A. 90
• B. 120
• C. 109.5
• D. 180

Answer: Option B

Explanation:

• A. বিউটিন 1,3-আইন
• B. বিউট-1-ইন-3-আইন
• C. বিউট-1-আইন-3-ইন
• D. বিউট-1,3-ইন-আইন

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. 4.0
• B. 2.0
• C. 1.0
• D. 3.0

Answer: Option B

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. $HCHO$
• B. $C{H}_3 COC{H}_3$
• C. $C{H}_3 CHO$
• D. $HCOOH$

Answer: Option C

Explanation:

• A. 3,2,1
• B. 2,3,1
• C. 1,2,3
• D. 2,2,2

Answer: Option B

Explanation:

• A. 14.37g
• B. 7.12g
• C. 55.46g
• D. 143.8g

Answer: Option D

Explanation:

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

Answer: Option A

Explanation: