Metallic luster is found in which of the following non-metals?
(A) Iodine
(B) graphite
(C) both (A) and (B)
(D) none of these
Limestone on decomposition gives_______and carbon dioxide.
(A) Calcium hydrogen carbonate
(B) Calcium carbonate
(C) Calcium hydroxide
(D) Calcium oxide
Which of the following is an allotrope of carbon?
(A) Diamond
(B) Fullerene
(C) graphite
(D) all
What is Carbon?
(A) non-metals
(B) metal
(C) metalloids
(D) none of these
The cleaning work is done well by soap?
(A) hard water
(B) soft water
(C) both types of water
(D) All the statements are true
What are diamond and graphite of carbon?
(A) apocalyptic
(B) isotopes
(C) polymer
(D) isomer
Define Air?
(A) compound
(B) Mixture
(C) Liquid
(D) solution
Which of the following is neither an element nor a compound?
(A) mercury
(B) water
(C) Air
(D) sodium chloride
The following is a compound?
(A) brass
(B) Steel
(C) sand
(D) Diamond
What is gunpowder?
(A) compound
(B) Mixture
(C) Liquid
(D) none of these
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