General Science - Online Test
Q1. We say that a light wave is linearly polarized in y direction if
Answer : Option C
Explaination / Solution:
The displacement of electric field vector takes place along y axis for linearly polarised light along same direction though the direction of wave is at right angle to electric field vector.
Q2. Assuming one unpaired electron spin per atom, saturation magnetization in a long cylinder of iron is(n for iron is atoms/m3,Bohr magneton
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. A category containing those species whose members survive only in captivity or as artificially supported populations far outside their historical geographic range is grouped under:
Answer : Option A
Explaination / Solution:
A taxon known only to survive in cultivation, in captivity or as a naturalized population (or populations) well outside the past range. A taxon is presumed Extinct in the Wild when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon’s life cycle and life form.
Q4. Which of the following species is expected to be colourless?
Answer : Option C
Explaination / Solution:
Ti is in d0 state so no d - d transition.
Q5. During adolescence phase, Sunil’s body became abnormally large due to excessive growth of bones of his lower jaw and limbs.This abnormality is called
Answer : Option C
Explaination / Solution:
Acromegaly is the abnormal growth of the hands, feet and face caused by over production of growth hormone by pituitary gland.
Q6. Emf of the cell
at 298 K is
at 298 K is
Answer : Option B
Explaination / Solution:
Q7. A marine cartilaginous fish that can produce electric current is
Answer : Option B
Explaination / Solution:
Torpedo is a genus of rays, commonly known as electric rays, torpedo rays, or torpedoes. They are slow-moving bottom-dwellers capable of generating electricity as a defense and feeding mechanism.
Q8. The fraction of deposits kept as Cash Reserves by the commercial banks is a
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. The potential barrier in the depletion layer is due to
Answer : Option D
Explaination / Solution:
When p-n junction is formed, the electrons from n-region diffuse through the junction into p-region provide positive ions in n-region similarly holes from p-region diffuse into n-region provide negative ions in p-region. Due to these ions, an electric field is set up across the junction from positive ions to negative ions. This electric field sets a potential barrier at the junction.
Q10. Most frequently used index number formula are
Answer : Option A
Explaination / Solution:
An index number becomes a weighted index when the relative importance of items is taken care of.
