[Co(NH₃)₅SO₄]Br and [Co(NH₃)₅Br]SO₄ are a pair of ....... isomers.

• ionisation

• ligand

• coordination

• hydrate

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)

The IUPAC name of the following compound is-

• ethoxy propane

• 1,1-dimethyl ether

• 2-ethoxy isopropane

• 2-ethoxy propane

155.

Calorific value of producer gas is low because of

• high percent of N₂

• low percent of CO₂

• high percent of CO

• low percent of N₂

One mole of alkene $\underline{\mathrm{X}}$ on ozonolysis gave one mole of acetaldehyde and one mole of acetone. The IUPAC name of $\underline{\mathrm{X}}$ is

• 2-methyl-2-butene

• 2-methyl-1-butene

• 2-butene

• 1-butene

The concentration of an organic compound in chloroform is 6.15 g per 100 mL of solution. A portion of this solution in a 5 cm polarimeter tube causes an observed rotation of -1.2°. What is the specific rotation of the compound?

• + 12°

• -3.9°

• -39°

• +61.5°

Which one of the following exhibits enantiomerism?

• BeCH₂-CH₂-CH₂-CH₂Br

• H₃C-CH(Br)-CH₂-CH₂-CH₃

• H₃C-CH₂-CH₂-CH₂Br

• H₃C-CH₂-CBr₂-CH₃

With respect to chlorobenzene, which of the following statements is not correct ?

• Cl is ortho/para directing

• Cl exhibits + M effect

• Cl is ring deactivating

• Cl is meta directing

Match the following.

• A B C D

  1 4 3 5

• A B C D

  2 4 1 5

• A B C D 

  5 1 4 2

• A B C D

  5 1 3 2