Chemistry-Physical and Chemical Changes [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 13 - 17 of 43
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Question 13
Question MCQ▾
A student took five test tubes containing solutions of different colors marked I, II, III, IV and V as shown below. The test tubes containing copper sulphate and ferrous sulphate solution could be the tubes
Choices
Choice (4) | Response | |
---|---|---|
a. | II and IV | |
b. | IV and V | |
c. | I and V | |
d. | III and V |
Question 14
Question MCQ▾
A large iceberg melts at the base but not at the top because
Choices
Choice (4) | Response | |
---|---|---|
a. | ice at the base contains impurities | |
b. | ice at the top is different kind | |
c. | the base of iceberg remains in warmer conditions | |
d. | higher pressure at the base lowers the melting point of ice |
Question 15
Question MCQ▾
Which of these methods is used to extract alcohol from a mixture of alcohol and water?
Choices
Choice (4) | Response | |
---|---|---|
a. | Bleaching | |
b. | Crystallization | |
c. | Oxidation | |
d. | Distillation |
Question 16
Question MCQ▾
Varsha adds a few drop of the universal indicator solution to a dilute solution of taken in a test-tube. She observed … colour.
Choices
Choice (4) | Response | |
---|---|---|
a. | mustard | |
b. | green | |
c. | blue | |
d. | Yellow |
Question 17
Question MCQ▾
Consider the following statements
I. Pyrolusite is the ore of zinc.
II. Calamine is the ore of manganese.
Which of the above statement (s) is/are correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | I and II | |
b. | I nor II | |
c. | Only I | |
d. | Only II |