Which of the following compound(s) has 'Z' configuration ?

• (i) only

• (ii) only

• (iii) only

• (i) and (iii) only

According to Cahn-Ingold-Prelog sequence rules, the correct order of priority for the given groups is

• -COOH > -CH₂OH > -OH > -CHO

• -COOH > -CHO > -CH₂OH > -OH

• -OH > -CH₂OH > -CHO > -COOH

• -OH > -COOH > -CHO > -CH₂OH

What are X and Y respectively in the following reaction?

Z-product $\stackrel{\mathrm{Y}}{\leftarrow }$ 2-butyne $\stackrel{\mathrm{X}}{\to }$ E-product

• Na/ NH₃ (liq) and Pd/ BaSO₄ + H₂

• Ni/ 140°C and Pd/ BaSO₄ + H₂

• Ni/ 140°C and Na/ NH₃ (liq)

• Pd/ BaSO₄ + H₂ and Na/ NH₃ (liq)

24.

In which of the following reactions, chlorine acts as an oxidising agent?

(i) CH₃CH₂OH + Cl₂ → CH₃CHO + HCl

(ii) CH₃CHO + Cl₂ → CCl₃ . CHO + HCl

(iii) CH₄ + Cl₂ $\stackrel{\mathrm{hv}}{\to }$ CH₃Cl + HCl

The correct answer is-

• (i) only

• (ii) only

• (i) and (iii)

• (i), (ii) and (iii)

The correct order of reactivity of hydrogen halides with ethyl alcohol is

• HF > HCl > HBr > HI

• HCl > HBr > HF > HI

• HBr > HCl > HI > HF

• HI > HBr > HCl > HF

The IUPAC name of the following compound is-

• ethoxy propane

• 1,1-dimethyl ether

• 2-ethoxy isopropane

• 2-ethoxy propane

The structure of the compound formed, when nitrobenzene is reduced by lithium aluminium hydride (LiAlH₄) is

If the mass defect of ₅B¹¹ is 0.081 u, its average binding energy (in MeV) is

• 8.60

• 6.85

• 5.60

• 5.86

What is the temperature at which the kinetic energy of 0.3 moles of helium is equal to the kinetic energy of 0.4 moles of argon at 400 K?

• 400 K

• 873 K

• 533 K

• 300 K

Assertion (A) : The aqueous solution of CH₃COONa is alkaline in nature.

Reason (R) : Acetate ion undergoes anionic hydrolysis.

The correct answer is

• both (A) and (R) are true and (R) is the correct explanation of (A).

• both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true but (R) is not true.

• A) is not true but (R) is true.