NSO Level 1- Science Olympiad (SOF) Class 10: Questions 622 - 629 of 1497
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Question 622
Question MCQ▾
What is the purpose of polling process?
Choices
Choice (4) | Response | |
---|---|---|
a. | Removal of from | |
b. | Removal of from | |
c. | Removal of from | |
d. | For the removal of from |
Question 623
Question 624
Question 625
Question MCQ▾
Which of the following one is ore of Zinc?
Choices
Choice (4) | Response | |
---|---|---|
a. | Haematite | |
b. | Dolomite | |
c. | Calamine | |
d. | Cryolite |
Question 626
Question MCQ▾
In homologous series. All the members have the same … formula?
Choices
Choice (4) | Response | |
---|---|---|
a. | General formula | |
b. | Physical properties | |
c. | Molecular formula | |
d. | Empirical formula |
Question 627
Question MCQ▾
Generally ethanol is used in?
Choices
Choice (4) | Response | |
---|---|---|
a. | Tincture iodine | |
b. | Alcoholic drink | |
c. | Cough syrup | |
d. | Question does not provide sufficient data or is vague |
Question 628
Question MCQ▾
Ester can be prepared from the acid and the alcohol. What are the chemical formulas of then two compounds?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 629
Question MCQ▾
What is the ratio of hydrogen atoms in propane and propyne?
Choices
Choice (4) | Response | |
---|---|---|
a. | 1: 2 | |
b. | 2: 3 | |
c. | 2: 1 | |
d. | 3: 2 |