General Science - Online Test
Q1. For a given frequency of light and a positive plate potential in the set up below, If the intensity of light is increased then
Answer : Option C
Explaination / Solution:
With increase in intensity no. of photon incident increases. So that more electron emitted from metal and photo current increases with increase in intensity.
Q2. Match the following:
Pollutant
a) nitrogen oxides
b) fluorides
c) PCBs
d) Chlorofluorocarbons
Source
i) jet aeroplane emissions
ii) coal burning
iii) lightening
iv) burning plastics
Pollutant
a) nitrogen oxides
b) fluorides
c) PCBs
d) Chlorofluorocarbons
Source
i) jet aeroplane emissions
ii) coal burning
iii) lightening
iv) burning plastics
Answer : Option B
Explaination / Solution:
Nitrogen oxides is released by lightening, fluorides from coal burning, PCBs from burning plastics and chlorofluorocarbons from jet aeroplanes emissions.
Q3. The kelvin scale is related to celsius scale as :
Answer : Option A
Explaination / Solution:
The relation between Kelvin scale & Celcius scale of temperatures is -
K = °C + 273.15
Such a relation is based upon the experimental findings and subsequent conclusion of Charle's law .
The Kelvin scale is also termed as " absolute scale of temperature."
It is interesting to note that temperature below 0o C ( ie. negative values ) are possible in Celcius scale but in Kelvin scale , negative temperature is not possible .
Q4. Bromomethane, Chloromethane, Dibromomethane. 1 – Chloropropane, Isopropyl chloride, 1 – Chlorobutaneare all
Answer : Option C
Explaination / Solution:
These all are covalent compounds hence are soluble in organic solvents.
Q5. Which of the following statement is cor-rect?
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. The vector product of two vectors a and b is a vector c such that the magnitude of c is given by
Answer : Option D
Explaination / Solution:
As per definition of vector product :-
Q7. The polymer(s) of dextrose is
Answer : Option C
Explaination / Solution:
Cellulose and Stach is polymer of dextrose.
Q8. Which of these is an acoustic transducer?
Answer : Option D
Explaination / Solution:
Acoustic transducer is a device which converts one form of signal into another without any direct contact.
Q9. Genetic variation is created and inherited during
Answer : Option C
Explaination / Solution:
During sexual reproduction, gamete carrying different genetic combination unit together and variation in offspring is created that is inherited from generation to next generation.
Q10. MPC+MPS=
Answer : Option D
Explaination / Solution:
No Explaination.
