NSO Level 1- Science Olympiad (SOF) Class 10: Questions 615 - 621 of 1497
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Question 615
Question MCQ▾
Which of the following compound is define “Amphoterism” ?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. | All a., b. and c. are correct |
Question 616
Question MCQ▾
Which of the following compound has IUPAC name “Formaldehyde” ?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | HCHO | |
d. |
Question 617
Question MCQ▾
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 618
Question MCQ▾
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 619
Question MCQ▾
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 620
Question MCQ▾
… element liberate when react with diluted nitric acid?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 621
Question MCQ▾
… 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 |