Match the items in Column I with the items in Column II and assign the correct code.
Column I | Column II |
A. Pendulum | 1. Chrome steel |
B. Malachite | 2. Nickel Steel |
C. Calamine | 3. Na3AlF6 |
D. Cryolite | 4. CuCO3. Cu (OH)2 |
5. ZnCO3 |
Codes
A | B | C | D | |
1. | 1 | 2 | 3 | 4 |
2. | 2 | 4 | 5 | 3 |
3. | 2 | 3 | 4 | 5 |
4. | 4 | 5 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAmong the following an iron mineral is:
1. Malachite
2. Cassiterite
3. Pyrolusite
4. Magnetite
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFrom the following, the ores that are concentrated by froth flotation are:
a. | Haematite | b. | Galena |
c. | Copper pyrites | d. | Magnetite |
Choose the correct option:
1. a and b
2. b and c
3. c and d
4. a and d
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe fundamental principle of froth flotation process is:
1. | Impurities and metal ore have different wetting properties. |
2. | Impurities and metal ore have different solubility. |
3. | Impurities and metal ore have different diversity. |
4. | Impurities and metal ore have different compressive powers. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich are the most abundant elements present inside the earth's crust?
1. Al, and Fe
2. Al, and Cu
3. Fe, and Cu
4. Cu, and Ag
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe chemical composition of "slag" formed during the smelting process in the extraction of copper is:
1. Cu2 + FeS
2. FeSiO3
3. CuFeS
4. Cu2S + FeO
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider the following reaction.
\(\small{Bauxite\ ore\ +\ NaOH\ (conc.) \xrightarrow[\Delta]{Digester} \underset{Soluble}{(A)}}\)
\((A) \xrightarrow{Fresh\ Al(OH)_3}\ \underset{White}{(B)}\ +\ (C)\)
\({(B)} \xrightarrow[]{\Delta}\ (D)\ +\ H_2O\)
What is the molecular formula of compound D?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyReactions among the following that occur during calcination are:
a. | CaCO3 → CaO + CO2 |
b. | \(\frac{11}{2}\)O2 → Fe2O3 + SO2 | 2FeS2 +
c. | Al2O3.xH2O → Al2O3 + xH2O |
d. | \(\frac{3}{2}\)O2 → ZnO + SO2 | ZnS +
Choose the correct option:
1. a and b
2. b and c
3. c and d
4. a and c
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe substance that acts as a collector in the froth flotation method is:
1. Sodium xenate.
2. Sodium pyrophosphate.
3. Sodium nitroprusside.
4. Sodium ethyl xanthate.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is an incorrect match?
1. Kaolinite - Al2(OH)4Si2O5
2. Cuprite - Cu2O
3. Siderite - FeCO3
4. Calamine - ZnSO4
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology