NSO Level 1- Science Olympiad (SOF) Class 7: Questions 172 - 176 of 597
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Question number: 172
» Physical and Chemical Changes
Question
Which of the following is formed when Magnesium ribbon is burnt?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Magnesium oxide | |
b. | Magnesium dioxide | |
c. | Magnesium carbide | |
d. | Magnesium sulphide. | |
Question number: 173
» Physical and Chemical Changes
Question
Which of the following is produces during the combustion of coal?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Sulphur dioxide | |
b. | Carbon dioxide | |
c. | Carbon monoxide | |
d. | Both a. and b. are correct | |
Question number: 174
Question
Read the following statements.
Silkworm producing Tussar silk feeds on leaves.
The process of obtaining silk fibre from the cocoon is called.
Choose the option which fills the above blanks correctly.
The Process of Obtaining Silk Fibre
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Polyantha, shearing | |
b. | Sal, Reeling | |
c. | Polyantha, Reeling | |
d. | Sal, Shearing | |
Question number: 175
» Heat
Question
Which of the following packaging is most suitable to carry ice for longer distances?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Thermocole | |
b. | Sawdust. | |
c. | Sand | |
d. | Ice paper | |
Question number: 176
» Physical and Chemical Changes
Question
The ability or inability of a matter to undergo in the transitional change between different states in which the given matter can exist is due to change in which of the following characteristic property?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Physical property | |
b. | Physical change. | |
c. | Chemical property | |
d. | Chemical change | |