Isolation of Metals [JEE (Based on NTA Guidelines-IIT Engg.) Mains Chemistry]: Questions 1 - 6 of 67
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Question 1
Appeared in Year: 2016
Question MCQ▾
During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is
Choices
Choice (4) | Response | |
---|---|---|
a. | 55 minutes | |
b. | 330 minutes | |
c. | 220 minutes | |
d. | 110 minutes |
Question 2
Question Match List-Ⅰ List-Ⅱ▾
Match the entries listed in column (I) with appropriate entries listed in column (II)
List-Ⅰ (Column-1) | List-Ⅱ (Column-2) |
---|---|
(A) Cupellation | (i) Tin |
(B) Electro refining | (ii) Titanium |
(C) Van Arkel method | (iii) Silver |
(D) Poling | (iv) Copper |
Choices
Choice (4) | Response | |
---|---|---|
| ||
a. |
| |
b. |
| |
c. |
| |
d. |
|
Question 3
Question MCQ▾
Heating with carbon in absence of air is known as
Choices
Choice (4) | Response | |
---|---|---|
a. | Smelting | |
b. | Roasting | |
c. | Reduction | |
d. | Carbon-reduction |
Question 4
Question MCQ▾
Which of die following ore is best concentrated by froth floatation method?
Choices
Choice (4) | Response | |
---|---|---|
a. | Magnetite | |
b. | Malachite | |
c. | Cassiterite | |
d. | Galena |
Question 5
Question MCQ▾
Which of the following metal is obtained directly by
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 6
Question MCQ▾
Which of the following is not an ore?
Choices
Choice (4) | Response | |
---|---|---|
a. | Malachite | |
b. | Pig iron | |
c. | Bauxite | |
d. | Zinc blende |