General Science - Online Test
Q1. Using the standard electrode potential, find out the pair between which redox reactions is not feasible.
Answer : Option D
Explaination / Solution:
As for this couple is negative so this couple is not possible.
Q2. Identify mechanical contraceptive in figure below
Answer : Option A
Explaination / Solution:
Female condom is a mechanical contraceptive similar to condom used by male. It prevents the meeting of ovum with sperm as well as provide protection against STDs.
Q3. n accordance with the Bohr’s model, find the quantum number that characterises the earth’s revolution around the sun in an orbit of radius 1.5 m with orbital speed 3 m/s. (Mass of earth= 6.0 kg.)
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. Flow is a
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. In Pyridine, preferred site of nucleophilic substitution is one of the following positions
Answer : Option B
Explaination / Solution:
Due to resonance, this position is electron rich and steric hindrance will be least.
Q6. Dielectric polarization is the phenomenon
Answer : Option C
Explaination / Solution:
Atomic dipoles in a dielectric experience a torque when placed in an external electric field. As a result of this torque, they align themselves in the direction of the electric field, since thi is the position of least potential energy. This phenomenon in which the atomic dipoles align themselves in the diorection of the electric field is called dielectric polarization.
Q7. What is the mass of 1 mole of O2 ?
Answer : Option B
Explaination / Solution:
Calculations:
Mass of 1mole of O2
= the mass of 6.022 x 1023 molecules of O2 ' ( as per Avogadro's law )
= molar mass of O2 in grams ( ie. gram molar mss )
= 32 .0 g
Q8. Strong Nuclear Force is
Answer : Option A
Explaination / Solution:
In particle physics, the strong interaction is the mechanism responsible for the strong nuclear force (also called the strong force or nuclear strong force), and is one of the four known fundamental interactions, with the others being electromagnetism, the weak interaction and gravitation. At the range of 10−15 m (femtometer), the strong force is approximately 137 times as strong as electromagnetism, a million times as strong as the weak interaction and 1038times as strong as gravitation.
Q9. If two negatively sloped demand curves intersect then
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. At a particular temperature and atmospheric pressure, the solid and liquid phases of a pure substance can exist in equilibrium. Which of the following term defines this temperature?
Answer : Option B
Explaination / Solution:
Normal melting both the phases liquid and solid exist in equilibrium.
