1. A
   $58\text{ }nm$
2. B
   $32\text{ }nm$
3. C
   $86\text{ }nm$
4. D
   $102\text{ }nm$

Tap an option to check your answer.

1. A
   1
2. B
   Infinite
3. C
   $\frac{R_{1}R_{2}}{R_{1} - R_{2}}$
4. D
   Zero

Tap an option to check your answer.

1. A
   $0.14\%$
2. B
   $0.9\%$
3. C
   $9\%$
4. D
   $1.4\%$

Tap an option to check your answer.

1. A
   Bend towards the right
2. B
   Not bend but shrink
3. C
   Neither bend nor shrink
4. D
   Bend towards the left

Tap an option to check your answer.

1. A
   $1500\text{ }J$
2. B
   $1000\text{ }J$
3. C
   $500\text{ }J$
4. D
   $2000\text{ }J$

Tap an option to check your answer.

1. A
   Statement I is incorrect and statement II is correct
2. B
   Statement I is correct and statement II is incorrect
3. C
   Both statement I and statement II are false
4. D
   Both statement I and statement II are true

Tap an option to check your answer.

1. A
   $19.77\text{ }m$
2. B
   $39.55\text{ }m$
3. C
   $79.1\text{ }m$
4. D
   $158.2\text{ }m$

Tap an option to check your answer.

1. A
   $\frac{B_{0}v_{0}^{2}\text{ }d}{2a}$
2. B
   $\frac{B_{0}v_{0}\text{ }d}{2a}$
3. C
   $\frac{B_{0}v_{0}d^{2}}{a}$
4. D
   $\frac{B_{0}v_{0}d^{2}}{2a}$

Tap an option to check your answer.

1. A
   $34.65\text{ }s$
2. B
   $17.32\text{ }s$
3. C
   $0.034\text{ }s$
4. D
   $15.01\text{ }s$

Tap an option to check your answer.

1. A
   60 minutes
2. B
   20 minutes
3. C
   40 minutes
4. D
   13 minutes

Tap an option to check your answer.

1. A
   Different frequencies and different wavelengths
2. B
   Different frequencies and same wavelengths
3. C
   Same frequencies and same wavelengths
4. D
   Same frequencies and different wavelengths

Tap an option to check your answer.

1. A
   (A) and (C) only
2. B
   (A) only
3. C
   (A), (C) and (D) only
4. D
   (A) and (B) only

Tap an option to check your answer.

1. A
   ${NaBH}_{4},H_{3}O^{+}$
2. B
   ${LiAlH}_{4}$
3. C
   Alkaline ${KMnO}_{4},H^{+}$
4. D
   $HCl,Zn - Hg$

Tap an option to check your answer.

1. A
   ${Al}_{2}O_{3} \rightarrow Al$
2. B
   $ZnO \rightarrow Zn$
3. C
   ${Fe}_{2}O_{3} \rightarrow Fe$
4. D
   ${Cu}_{2}O \rightarrow Cu$

Tap an option to check your answer.

1. A
   $X = Na;Y = Mg$
2. B
   $X = Mg;Y = F$
3. C
   $X = Mg;Y = Na$
4. D
   $X = F;Y = Mg$

Tap an option to check your answer.

1. A
   $A = HCl;$ Anhydrous ${AlCl}_{3}$
2. B
   $A = HCl,{ZnCl}_{2}$
3. C
   $A = {Cl}_{2}$; UV light
4. D
   $A = {Cl}_{2}$; dark, Anhydrous ${AlCl}_{3}$

Tap an option to check your answer.

1. A
   Peptide bond
2. B
   glycosidic bond
3. C
   Hydrogen bonding
4. D
   van der Waals forces

Tap an option to check your answer.

1. A
   $x = F,Cl,Br,I$ and $y = F,Cl,Br$
2. B
   $x = F,Cl,Br$ and $y = F,Cl,Br,I$
3. C
   $x = Cl,Br,I$ and $y = F,Cl,Br,I$
4. D
   $x = F,Cl,Br,I$ and $y = F,Cl,Br,I$

Tap an option to check your answer.

1. A
   cis-poly isoprene
2. B
   Melamine formaldehyde resin
3. C
   Urea formaldehyde resin
4. D
   Phenol and formaldehyde resin

Tap an option to check your answer.

1. A
   Both statement I and statement II are false
2. B
   Statement I is true but statement II is false
3. C
   Statement I is false but statement II is true
4. D
   Both statement I and statement II are true

Tap an option to check your answer.

1. A
   The six-membered rings are fused to both six and five-membered rings.
2. B
   Each carbon atom forms three sigma bonds.
3. C
   The five-membered rings are fused only to six-membered rings.
4. D
   It contains 12 six-membered rings and 24 five-membered rings.

Tap an option to check your answer.

1. A
   (A), (B), (C) and (D)
2. B
   (A), (B) and (D) only
3. C
   (B), (C) and (D) only
4. D
   (A), (C) and (D) only

Tap an option to check your answer.

1. A
   to remove basic impurities
2. B
   to activate ${NH}_{3}$ used in the reaction
3. C
   to remove acidic impurities
4. D
   to increase the reactivity of alkyl halide

Tap an option to check your answer.

1. A
   
2. B
   
3. C
   
4. D
   

Tap an option to check your answer.

1. A
   $\left( {CH}_{3}CO \right)\overset{¨}{N}{HC}_{2}H_{5}$
2. B
   $\left( C_{2}H_{5} \right)_{3}\overset{¨}{N}$
3. C
   $\left( {CH}_{3}CO \right)_{2}\overset{¨}{N}H$
4. D
   $\left( C_{2}H_{5} \right)_{2}\overset{¨}{N}H$

Tap an option to check your answer.