NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1438 - 1444 of 1484
Access detailed explanations (illustrated with images and videos) to 1484 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.
Rs. 500.00 or
How to register?
Question number: 1438
» Chemistry » Carbon and Its Compounds
Question
Which of the following compound has IUPAC name “Formaldehyde”?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
|
|
| b. |
|
|
| c. | HCHO |
|
| d. |
|
|
Question number: 1439
» Chemistry » Metals and Non-Metals
Question
Which of the following is used calico printing, print industry and to joining the pieeces of china clay?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Water glass |
|
| b. | Calcium Chloride |
|
| c. | Silicones |
|
| d. | Carborandum |
|
Question number: 1440
» Chemistry » Metals and Non-Metals
Question
Which of the following metallurgical operation is correct at high temperature?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Electrometallurgy |
|
| b. | Pyrometallurgy |
|
| c. | Hydrometallurgy |
|
| d. | All of the above |
|
Question number: 1441
» Chemistry » Metals and Non-Metals
Question
Which of the below method is used to obtain pure metal or method used for purification of metal?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Electrolytic refining |
|
| b. | Gravity separation |
|
| c. | Froth Floatation |
|
| d. | Magnetic separation |
|
Question number: 1442
» Chemistry » Metals and Non-Metals
Question
…………. . element liberate when react with diluted nitric acid?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
|
|
| b. |
|
|
| c. |
|
|
| d. |
|
|
Question number: 1443
» Chemistry » Carbon and Its Compounds
Question
…… has cleaning properties on clothes in water while using detergent?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Benzene sulphuric acid |
|
| b. | Benzene sulphide |
|
| c. | Benzene sulphate |
|
| d. | Benzene sulphonate |
|
Question number: 1444
» Chemistry » Metals and Non-Metals
Question
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 |
|