Options:
- A. Alpha radiations
- B. Gamma radiations
- C. Beta radiations
- D. positron
View Answer
C. Beta radiations
Chemistry
Metal are highly ___________ ?
Options:
- A. Electropositive
- B. Electronegativity
- C. Both of these
- D. Neutral
View Answer
A. Electropositive
Which one of the following results in the discovery of proton.
Options:
- A. Cathode rays
- B. Canal rays
- C. X-rays
- D. Alpha rays
View Answer
B. Canal rays
Which one of the following radiation has the longer wavelength?
Options:
- A. infra red
- B. visible
- C. x-ray
- D. ultra violet
View Answer
A. infra red
Benzene gives mainly_________?
Options:
- A. Addition reaction
- B. Substitution reactions
- C. Halogenation
- D. All of these
View Answer
B. Substitution reactions
The earth absorb radiation in Visible range but emit radiation at the same rate in the:
Options:
- A. Ultra voilet
- B. Gamma rays
- C. Infrared
- D. All of these
View Answer
C. Infrared
The Chemical Formula of Sand is___________?
Options:
- A. Si2O3
- B. SiO2
- C. Al2O3
- D. Sr2O
View Answer
B. SiO2
What is the mass of one mole of Iodine?
Options:
- A. 74g
- B. 254g
- C. 127g
- D. 53g
View Answer
B. 254g
Which of the following can be separated by
Options:
- A. Sand and Iron Filing
- B. Sand and Naphthalene
- C. Both A & B
- D. None
View Answer
B. Sand and Naphthalene
Atoms of all the elements always contain in nucleus:
Options:
- A. Proton and neutron
- B. Neutron and electron
- C. Proton
- D. Neutron
View Answer
C. Proton