General Science - Online Test
Q1. The enzyme which hydrolyze the starch is
Answer : Option B
Explaination / Solution:
The enzymes that break down or hydrolyze starch into the constituent sugars are known as amylases.
Alpha-amylases are found in plants and in animals.
Human saliva is rich in amylase, and the pancreas also secretes the enzyme.
Q2. If several thin lenses of focal length … are in contact, the effective focal length is
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?
Answer : Option C
Explaination / Solution:
Disease causing microorganism enters through different routes into the body. Physiological barrier prevent their entry. Tears acts as physiological barrier for entry of pathogen.
Q4. Quantum mechanics is a theoretical science that deals with the study of the
Answer : Option A
Explaination / Solution:
quantum mechanics, science dealing with the behaviour of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of molecules and atoms and their constituents—electrons, protons, neutrons, and other more esoteric particles such as quarks and gluons. These properties include the interactions of the particles with one another and with electromagnetic radiation (i.e., light, X-rays, and gamma rays).
Q5. Syringes are examples of
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. Brain cavities are filled with CSF. In subarachnoid space, the CSF plays following roles :
Answer : Option A
Explaination / Solution:
Brain cavities are filled with cerebrospinal fluid (CSF). In subarachnoid space, the CSF acts as shock proof cushion to prevent in injury in case of accident.
Q7. Thermal stress is stress induced in solids
Answer : Option D
Explaination / Solution:
If temperature deformation is permitted to occur freely, no load or stress will beinduced in the structure. In some cases where temperature deformation is not permitted, an internal stress is created. The internal stress created is termed as thermal stress .
Q8. The difference you find between fixed and variable costs
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. Green plants reduce environmental pollution by :
Answer : Option D
Explaination / Solution:
Green plants help reduce environmental pollution by removing the excess of CO2 by using it in photosynthesis for making their food.
Q10. Which of the following ion has smallest radii?
Answer : Option A
Explaination / Solution:
In period when we move from left to right in a period atomic radii 1st decreases till nickel then starts increasing so Ni2+ has smallest radii.
