40 mg of pure sodium peroxide is dissolved in 10L of distilled water. The pH of
40 mg of pure sodium peroxide is dissolved in 10L of distilled water. The pH of the solution is Options…
8 years ago
Questions
If increase in temperature and volume of an ideal gas is two times, then the initial
If increase in temperature and volume of an ideal gas is two times, then the initial pressure P changes to…
8 years ago
The interatomic distances in H₂ and Cl molecules are 74 and 198 pm respectively
The interatomic distances in H₂ and Cl molecules are 74 and 198 pm respectively. The bond length of HCl is…
8 years ago
After tow hours, the ratioactive substance becomes 1/16th of original amount
After tow hours, the ratioactive substance becomes 1/16th of original amount. Then the half -life (in min) is Options (a)…
8 years ago
The wavelength of the radiation emitted when an electron drops from 3rd orbit
The wavelength of the radiation emitted when an electron drops from 3rd orbit to 2nd orbit in H - atom…
8 years ago
When 4g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat
When 4g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is…
8 years ago
Aspirin is an
Aspirin is an Options (a) antithistamine (b) antimalarial (c) analgesic (d) antibiotic Correct Answer: analgesicExplanation:No explanation available. Be the first…
8 years ago
Glycerine is a/an
Glycerine is a/an Options (a) ester (b) secondary alcohol (c) tertiary alcohol (d) trihydric alcohol Correct Answer: trihydric alcoholExplanation:No explanation…
8 years ago
Transition elements
Transition elements Options (a) do not act as catalysts (b) have low melting point (c) exhibit variable valency (d) exhibit…
8 years ago
Dialysis can separate
Dialysis can separate Options (a) glucose and Nacl (b) glucose and sucrose (c) glucose and fructose (d) glucose and proteins…
8 years ago