(A) Silicon
(B) Ultra pure carbon
(C) Tantalum
(D) Beryllium
Tag: Inorganic Chemistry
Diamond is harder than graphite because?
(A) Tetrahedral structure of diamond
(B) Difference of Crystalline structures
(C) Difference in layers of atoms
(D) None of the above
Ratio of pure Gold in 18 carat gold is?
(A) 60%
(B) 75%
(C) 80%
(D) 90%
Which of the following is a natural dye?
(A) Phenolphthalein
(B) Alizarin
(C) Aniline blue
(D) Crystal violet
In which of the following substances all carbon atoms are quaternary in nature?
(A) Teflon
(B) Diamond
(C) Naphthalene
(D) Graphite
Which of the following alkali metals has highest specific heat?
(A) Rubidium
(B) Caesium
(C) Potassium
(D) Lithium
Which of the following gases will effuse out of football bladder most quickly?
(A) He
(B) H2
(C) N2
(D) O2
Bleaching action of moist sulphur dioxide is because of its?
(A) Acidic property
(B) Basic property
(C) Oxidising property
(D) Reducing property