Options:
- A. Metallic
- B. Amorphous
- C. Crystalline
- D. Vitreous
View Answer
C. Crystalline
Chemistry
Planks theory says energy is emitted__________________?
Options:
- A. In continuous manner
- B. Discontinuous manner
- C. Simultaneously
- D. In the form of heat
View Answer
B. Discontinuous manner
Positive rays are produced__________________?
Options:
- A. By burning of gas
- B. By cooling of the gas
- C. By the bombardment of cathode rays on gas molecules
- D. From anode like cathode rays produced from cathode
View Answer
C. By the bombardment of cathode rays on gas molecules
When 6d orbital is complete the entering electron goes into_________________?
Options:
- A. 7f
- B. 7s
- C. 7p
- D. 7d
View Answer
C. 7p
Which is the unit of (K) rate constant for zero order reaction ?
Options:
- A. s-1
- B. mol dm-3 s-1
- C. mol-1 dm3 s-1
- D. mol-2 dm6 s-1
View Answer
B. mol dm-3 s-1
A limiting reactant is one which________________?
Options:
- A. is taken in lesser quantity in grams as compared to other reactants
- B. is taken in lesser quantity in volume as compared to other reactants
- C. gives the maximum amount of the product which is required
- D. gives the minimum amount of the product under consideration
View Answer
D. gives the minimum amount of the product under consideration
In the complex [Cr(OH)3(H2O)3] the coordination number is __________________?
Options:
- A. 2
- B. 3
- C. 4
- D. 6
View Answer
D. 6
Chemical properties of first member of homologous series with respect to other members are_________________?
Options:
- A. same
- B. different
- C. depends upon number of C atoms
- D. depends upon number of H atoms
View Answer
A. same
Propene can exhibit________________?
Options:
- A. cis-trans isomerism
- B. geometric isomerism
- C. both a & b
- D. none of the above
View Answer
D. none of the above
the fractional distillation of petroleum produces gasoline up to ________________?
Options:
- A. 10%
- B. 15%
- C. 20%
- D. 30%
View Answer
C. 20%