General Science - Online Test
Q1.
In the human kidney :
i. outer zone is called medulla and inner zone is called cortex.
ii.cortex extends between medullary pyramidsas renal columns of Bellini.
Answer : Option C
Explaination / Solution:
Inside the kidney, there are two zones, an outer cortex and an inner medulla. The cortex extends in between the medullary pyramids as renal columns called columns of Bertini.
Q2.
If Q is the energy supplied to the system U the change in internal energy, and W the work done on the environment, First Law of Thermodynamics states that
Answer : Option D
Explaination / Solution:
Heat given to a system is equal to the sum of increase in its internal energy and the work done by the system against the surroundings.
Q3. Evidences of evolutionary relationship are found in ______.
Answer : Option C
Explaination / Solution:
Evidence of evolutionary relationship are found in fossils in different way. Some fossils act as connecting link between two species. Fossils are found at different depth in earth crust that give evidence of existence of different period of time.
Q4. Charles’ law states that pressure remaining constant, the volume of a fixed mass of a gas is
Answer : Option B
Explaination / Solution:
P α T (at constant V).
Q5. The dynamic nature of chemical equilibrium can be demonstrated in the synthesis of ammonia by Haber.s process. Choose the appropriate option given below
Answer : Option A
Explaination / Solution:
Use of isotope (deuterium) in the formation of ammonia clearly indicates that chemical reactions reach a state of dynamic equilibrium in which the rates of forward and reverse reactions are equal and there is no net change in composition.
Q6. Which is not the function of parenchymatous cells?
Answer : Option A
Explaination / Solution:
The parenchyma performs various functions like photosynthesis, storage, secretion.
Q7. Wave picture of light failed to explain.
Answer : Option A
Explaination / Solution:
If light were strictly a wave, the energy in the light would be represented by the amplitude of the light wave. A more intense light source, even if it was light of a lower frequency, would have enough energy to knock electrons away from their molecular orbits, which is necessary to generate a photoelectric current. What actuall occurs is that light below a certain threshold frequency does not generate any current, no matter how intense the light is. Even though the total light energy hitting the photoelectric cell may be high, it cannot free electrons.
Q8. The phenomenon of heterophyll is an example of
Answer : Option C
Explaination / Solution:
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called plasticity. This phenomenon of heterophylly is an example of plasticity.
Q9. Continuous spectrum is produced by
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. Living things differ from non-living things in a manner that
Answer : Option C
Explaination / Solution:
The cellular level organisation of the body is the defining feature of life forms or living things. Hence, the correct option is Living things have different level of organisation.
