General Science - Online Test
Q1. Okazaki is known for his contribution to the understanding of
Answer : Option C
Explaination / Solution:
Reiji Okazaki (October 8, 1930 – August 1, 1975) was a pioneer Japanese molecular biologist, known for his research on DNA replication and especially for describing the role of Okazaki fragments along with his wife Tsuneko.
He proposed the concept of semi-conservative nature of replication of DNA molecules.
Q2. Series LCR circuit is connected to a variable frequency 230 V source. L = 5.0 H, C = 80 μF, R = 40 Ω. Impedance of the circuit and the amplitude of current at the resonating frequency are
Answer : Option B
Explaination / Solution:
impedence in series LCR circuit
at resonance
hence
V = 230 Volt
Hence current
Q3. A milliammeter of range 10 mA has a coil of resistance 1 Ω.To use it as an ammeter of range 1 A, the required shunt must have a resistance of
Answer : Option C
Explaination / Solution:
(Theory in chapter 4 – magnetic effect of current)
(Theory in chapter 4 – magnetic effect of current)
Q4. A particle is executing simple harmonic motion with an amplitude of 0.02 meter and frequency 50 hertz. The maximum acceleration of the particle is
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. How many hydrogen-bonded water molecule(s) are associated in
Answer : Option A
Explaination / Solution:
In crystal structure of Copper sulphate pentahydrate there only 4 water molecule of hydration and one water molecule is associated with hydrogen bonding interaction.
Q6. Which of the following algae can be used as single cell protein?
Answer : Option B
Explaination / Solution:
Spirulina is single celled algae that can be easily grown in starch containing medium life waste water from potato processing plants. It contains high quantity of protein that can be easily used by human beings.
Q7. If two stars have an angular separation of Δθ and ‘a’ is the radius of the telescope aperture, then the angular resolution (for the stars to appear separate) is given by the expression
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. To increase the magnetic field of a solenoid what core material should be used ?
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. Interpret from the following graph :
Answer : Option D
Explaination / Solution:
Extinction rates are unaffected due to immigration near island and immigration far island. Extinction rate is affected by human interference.
Q10. Which of the following is a negative ligand?
Answer : Option B
Explaination / Solution:
C5H5− a negative ligand.
