One of the most valuable minerals stored in the earth:
rock
metals
coal
kerosene
Which one of the following looks almost like black glass?
granite
pumice
sand stone
obsidian
The Red Fort in New Delhi is made of:
lime stone
shale
conglomerate
Which one of the following is a natural non- living substance?
An element
A mineral
A compound
A mixture
A major portion of the earth's land surface is covered with:
igneous rock
sedimentary rocks
metamorphic rocks
minerals
What deposits in the earth are limited?
rocks
water
soil
What is used for dry- cleaning?
Coal
Petroleum
Copper
Iron
Which among the following should be carefully used?
wind, water
water, sunlight
coal, oil
soil, sunlight
Which among the following is used as an ornamental rock and for polishing ornaments?
Chalk is one form of:
