General Science - Online Test
Q1. The major contribution of Paul Dirac was in
Answer : Option D
Explaination / Solution:
Paul Dirac was one of the greatest theoretical physicists in history. He completely reshaped quantum mechanics with the astounding Dirac Equation.
The Dirac Equation explained the behavior of electrons and foretold the existence of antimatter. Dirac was also able to infer the existence of vacuum polarization, revealing that what we once believed was empty space is actually awash with short-lived particle-antiparticle pairs.
Q2. In series combination of capacitors, potential drops across the individual capacitors are equal to
Answer : Option A
Explaination / Solution:
When capacitors are connected in series, they have equal charge but the potential difference across them is given by .Therefore
Q3. There are ___m in 2000 mm?
Answer : Option C
Explaination / Solution:
Since , 1 m
=1000 mm.
or, 1 mm
=
2000 mm
=[ ] m
= 2 m
Q4. Which of the following is one of the assumptions of the indifference curve analysis?
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. If a gymnast sitting on a rotating stool with his arms outstretched, suddenly lowers his hands
Answer : Option C
Explaination / Solution:
When gymnast lowers his hand the distance of mass from rotational axis decrease. Hence his moment of inertia decreases and angular velocity increase to conserve angular momentum.
Q6. The surface tension of soap solution is 25 x . The excess pressure inside a soap bubble of diameter 1 cm is
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. Intestinal mucosa has microvili to
Answer : Option C
Explaination / Solution:
The innermost layer of intestinal wall is called mucosa. Mucosa contain microvilli to increase the surface area for absorption of digested food to transport into different part of the body.
Q8. A bacterium capable of tolerating extreme heat, dryness and toxic chemicals is probably having
Answer : Option C
Explaination / Solution:
A bacterium capable of tolerating extreme heat, dryness and toxic chemicals have ability to produce endospores inside the body that help them to tide over unfavorable conditions.
Q9. N2O3 is
Answer : Option B
Explaination / Solution:
Q10. Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
Answer : Option D
Explaination / Solution:
(CH3)3CCH3 + HX(X=Cl,Br,I) ------------> (CH3)3CCH2X
Hence a monosubstituted derivative is formed.
