MCQ
Find out the incorrect pair :
- AGold ore – Cyanide leaching
- BNickel ore – Ammonia leaching
- CAluminium ore – Alkali leaching
- ✓Silver ore – Acid leaching
✓
Answer
Correct option: D.
Silver ore – Acid leaching
Silver ore – Acid leaching
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Similar questions
Consider the following statements.
(i) When pressure increases, the amount of physisorplion also increases.
(ii) Permanent gases like $H _2, N_2$ and $O _2$ cannot be liquefied easily.
(iii) Lesser is the surface area, higher is the amount adsorbed.
Which of the above statement is / are correct?
→(i) When pressure increases, the amount of physisorplion also increases.
(ii) Permanent gases like $H _2, N_2$ and $O _2$ cannot be liquefied easily.
(iii) Lesser is the surface area, higher is the amount adsorbed.
Which of the above statement is / are correct?
Find out the incorrect pair :
Bleeding is stopped by the application of ferric chloride. This is because …………
Complete hydrolysis of cellulose gives ____________.
Which colourless gas evolves when $NH _4 Cl$ reacts with Zinc in a dry cell battery?
→Which one of the following does not undergo friedel crafts reaction?
Which of the following is mostly used in fertilizer industry?
| Column I | Column II |
| A. Fruit sugar | 1. Lactose |
| B. Blood sugar | 2. Fructose |
| C. Malt sugar | 3. Glucose |
| D. Milk sugar | 4. Maltose |
| Column - I | Column - II |
A.  |
1. Mendius reaction |
| B. $CH _3 CN \stackrel{ Na / C _2 H _5 OH }{\longrightarrow} CH _3 CH _2 NH _2$ | 2. Sabatier –Mailhe reaction |
| C. $C _6 H _5 N _2 Cl \stackrel{\text { Benzene }}{\underset{ NaOH }{\longrightarrow}} C _6 H _5- C _6 H _5$ | 3. Hoffmann’s degradation reaction |
| D. $C _2 H _5 OH \underset{ Al _2 O _3}{\stackrel{ NH _3}{\longrightarrow}}\left( C _2 H _5\right)_3 N$ | 4. Gomberg reaction |
Which one of the following is used to identify chloride ion in inorganic qualitative analysis?