NSO Level 1- Science Olympiad (SOF) Class 8: Questions 453 - 458 of 1178
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Question 453
Question MCQ▾
Identify the polymers from its use
It is used as non stick coating for cookware, pipe work for reactive and corrosive chemicals, as a lubricant in machineries, graft material in surgical interventions and coating on catheters
Choices
Choice (4) | Response | |
---|---|---|
a. | Nylon | |
b. | PVC | |
c. | Polythene | |
d. | Teflon |
Question 454
Question MCQ▾
Tungsten is used to make filaments in electric bulb. Which property of metals is used here?
Choices
Choice (4) | Response | |
---|---|---|
a. | Ductility | |
b. | High melting point | |
c. | Conductivity | |
d. | All a., b. and c. are correct |
Question 455
Question MCQ▾
Some of the most common blended fabrics are given in the questions. Find out the benefit of the blend over individual fabric.
Jute fibre is used to make
Choices
Choice (4) | Response | |
---|---|---|
a. | Gunny bags | |
b. | Fabric | |
c. | Decorative articles | |
d. | All a., b. and c. are correct |
Question 456
Question MCQ▾
Options are given in the jumbled form. Reshuffle the spellings and identify the correct options.
A thermosetting plastic
Choices
Choice (4) | Response | |
---|---|---|
a. | Relyente | |
b. | Yopetlers | |
c. | Yoln | |
d. | Lemanemi |
Question 457
Question MCQ▾
The non-metal essential for life is
Choices
Choice (4) | Response | |
---|---|---|
a. | Bromine | |
b. | Graphite | |
c. | Iodine | |
d. | Carbon |
Question 458
Question MCQ▾
Mother gave Meena two small pouches containing iron fillings and coal and asked her to crush both to a fine powder. She could make a fine powder of coal but could not powder iron fillings. The reason behind it is
Choices
Choice (4) | Response | |
---|---|---|
a. | Iron is a metal and coal is a non-metal | |
b. | Metals are hard and non-metals are soft and brittle | |
c. | Both a. and b. are correct | |
d. | Question does not provide sufficient data or is vague |