Options:
- A. PdCl2
- B. Cu2Cl2
- C. CuCl2
- D. PbCl2
View Answer
C. CuCl2
Chemistry
The deliquescence is a property in which a solid____________________?
Options:
- A. Absorbs moisture and remains solid
- B. Absorbs moisture and turns to liquid form
- C. Loses water of crystallization
- D. Increases the number of water of crystallization
View Answer
B. Absorbs moisture and turns to liquid form
Which one of the following carbonate is water insoluble ?
Options:
- A. Na2CO3
- B. K2CO3
- C. (NH4)2CO3
- D. CaCO3
View Answer
D. CaCO3
What catalyst is employed when benzene is prepared from acetylene at 70
Options:
- A. Cr2O3 + A2O3 + SiO2
- B. Raney nickel
- C. Organo-nickel
- D. Ni 250
View Answer
C. Organo-nickel
Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?
Options:
- A. The nature of its oxides
- B. The charge on its ions
- C. The formula of its oxide
- D. Its number of isotopes
View Answer
D. Its number of isotopes
Which element was not known when Mendeleev proposed his classification ?
Options:
- A. Hydrogen
- B. Sodium
- C. Copper
- D. Germanium
View Answer
D. Germanium
Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________?
Options:
- A. Covalent halides
- B. Electronegative halides
- C. Polymeric halides
- D. Polymeric hydrides
View Answer
C. Polymeric halides
Which of the following has orange flavour__________________?
Options:
- A. isobutyl formate
- B. octyl acetate
- C. ethyl butyrate
- D. amyl lactate
View Answer
B. octyl acetate
The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?
Options:
- A. esterification
- B. neutralization
- C. hydrolysis
- D. saponification
View Answer
A. esterification
Tetrahydroborate ion is the source of_______________?
Options:
- A. proton
- B. H+
- C. both A & amp; B
- D. H-
View Answer
D. H-