Options:
- A. Uni-negative
- B. Uni-positive
- C. Di-negative
- D. Di-positive
View Answer
A. Uni-negative
Chemistry
Methyl alcohol is not used as___________________?
Options:
- A. a solvent
- B. an anti freezing agent
- C. a substitute for petrol
- D. for denaturing of ethyl alcohol
View Answer
C. a substitute for petrol
Which of the following theories is superior to others__________________?
Options:
- A. VSEPR
- B. VBT
- C. MOT
- D. none of the above
View Answer
C. MOT
Benzene is a good solvent for__________________?
Options:
- A. fats
- B. resins
- C. iodine
- D. all the above
View Answer
D. all the above
Which of the following elements react with steam to produce H2 gas?
Options:
- A. Pd
- B. Ni
- C. Sn
- D. All of the above
View Answer
D. All of the above
Which one of the following has the maximum number of isotopes ?
Options:
- A. oxygen
- B. carbon
- C. tin
- D. chlorine
View Answer
C. tin
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
Options:
- A. Gas
- B. Liquid
- C. Volatile solid
- D. All
View Answer
A. Gas
Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
Options:
- A. 20cm3/min
- B. 40cm3/min
- C. 160cm3/min
- D. 2.5cm3/min
View Answer
B. 40cm3/min
Which of the following is not characteristics of reversible reaction__________________?
Options:
- A. whole amount of reactant does not change into product
- B. chemical equilibrium is established
- C. a catalyst changes the direction of reaction
- D. rate of forward reaction decreases as reaction proceeds
View Answer
C. a catalyst changes the direction of reaction
Which of the following element doesnot show allotropy_________________?
Options:
- A. Carbon
- B. Arsenic
- C. Nitrogen
- D. Sulphur
View Answer
C. Nitrogen