Extraction of gold and silver involves leaching with CN– ion. Silver is later recovered by

• Liquation

• Distillation

• Zone refining

• Zone refining

Extraction of gold and silver involves leaching with CN^– ion. Silver is later recovered by

• Liquation

• Distillation

• Zone refining

• Zone refining

Pick out the correct statement with respect
[Mn(CN)_6]^3–

• It is sp³d² hybridised and octahedral

• It is sp³d² hybridised and tetrahedral

• It is d²sp³ hybridised and octahedral

• It is d²sp³ hybridised and octahedral

Mixture of chloroxylenol and terpineol acts as

• Analgesic 

• Antiseptic

• Antipyretic

• Antipyretic

35.

Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?

• 
• 
• 
• 

Which one is the most acidic compound?

Which of the following statements is not correct?

• Insulin maintains sugar level in the blood of ahuman body

• Ovalbumin is a simple food reserve in egg-white

• Blood proteins thrombin and fibrinogen are involved in blood clotting

• Blood proteins thrombin and fibrinogen are involved in blood clotting

Predict the correct intermediate and product in the following reaction

Consider the reactions :

• A-Methoxymethane, X-Ethanoic acid, Y-Acetate ion, Z-hydrazine

• A-Methoxymethane, X-Ethanol, Y-Ethanoic acid, Z-Semicarbazide

• A-Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazone

• A-Ethanal, X-Ethanol, Y-But-2-enal, Z-Semicarbazone

Which one is the correct order of acidity?

• CH₂= CH₂> CH₃– CH = CH₂> CH₃– C ≡ CH > CH ≡ CH

• CH ≡  CH > CH₃– C ≡  CH > CH₂= CH₂> CH₃– CH₃

• CH ≡ CH > CH₂= CH₂> CH₃– C ≡  CH >CH₃– CH₃

• CH ≡ CH > CH₂= CH₂> CH₃– C ≡  CH >CH₃– CH₃