• A. $0.2689\times {10}^{22}$
• B. $2.689\times {10}^{23}$
• C. $6.023\times {10}^{23}$
• D. $2.689\times {10}^{22}$

Answer: Option D

Explanation:

• A. ${\mathrm{CH}}_3\mathrm{COOH}$
• B. $HCHO$
• C. ${\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{OH}\right){\mathrm{CH}}_3$
• D. ${\mathrm{CH}}_3{\mathrm{COCH}}_3$

Answer: Option B

Explanation:

• A. $5-8 mg{L}^{-1}$
• B. $3-7 mg{L}^{-1}$
• C. $5-9 mg{L}^{-1}$
• D. $4-8 mg{L}^{-1}$

Answer: Option A

Explanation:

• A. $-C{H}_{2}OH$
• B. $-COOR$
• C. $-CON{H}_2$
• D. $-COCI$

Answer: Option D

Explanation:

• A. $CIF$
• B. $PC{I}_3$
• C. $Si{F}_4$
• D. $CFC{I}_3$

Answer: Option C

Explanation:

• A. $N{a}_{2}C{O}_3$
• B. $K_{2}C{r}_2{O}_7$
• C. $KMn{O}_4$
• D. $N{a}_2{C}_2{O}_4$

Answer: Option B

Explanation:

• A. $Si{O}_{2}gel$
• B. $CaC{l}_2$
• C. $Conc.H_{2}S{O}_4$
• D. $A{l}_2{O}_3$

Answer: Option C

Explanation:

• A. $hybridized$
• B. $S{P}^{2}hybridized$
• C. $S{P}^{3}hybridized$
• D. $s^{2}P hybridized$

Answer: Option A

Explanation:

• A. $50\%C{H}_{3}OH$
• B. $100\%C{H}_{3}OH$
• C. $95\%C{H}_{2}C{H}_{2}OH+5\%C{H}_{3}OH$
• D. $95\% Rectifiedspirit + 5\%C{H}_{2}OH$

Answer: Option D

Explanation:

• A. $1.0M N{a}_2,C{O}_3$
• B. $1.0g H_2,S{O}_4$
• C. $1.0ml H_{2}S{O}_4$
• D. $1.01 ml H_{2}S{O}_4$

Answer: Option A

Explanation:

• A. $CaO.N{a}_{2}O$
• B. $CaO.St{O}_2$
• C. $CaO.A{l}_2{O}_3$
• D. $F{e}_2{O}_3.MnO$

Answer: Option B

Explanation:

• A. $(C{H}_3{)}_{3}COH$
• B. $(C{H}_3{)}_{2}CHOH$
• C. $C{H}_3\left(C{H}_2\right)OH$
• D. $C{H}_{3}C{H}_{2}OH$

Answer: Option A

Explanation:

• A. $2.5x{10}^{18}$
• B. $3.5\times {10}^{20}$
• C. $3.5\times {10}^{22}$
• D. $3.0\times {10}^{22}$

Answer: Option D

Explanation:

• A. $C{H}_3-\underset{N{H}_2}{CH}-COOH$
• B. $\underset{N{H}_2}{C{H}_2}-COOH$
• C. $(C{H}_3{)}_{2}CH-\underset{N{H}_2}{C{H}_{}}-COOH$
• D. $C{H}_6{H}_5-C{H}_2-\underset{N{H}_2}{C{H}_{}}-COOH$

Answer: Option B

Explanation:

• A. $Conc.HCl+ZnC{l}_2$
• B. $Conc.H_{2}S{O}_4+ZnC{l}_2$
• C. $Conc.NaOH+ZnC{l}_2$
• D. $Conc.KOH+ZnC{l}_2$

Answer: Option A

Explanation: