General Science - Online Test
Q1. If D and f are the objective diameter, and focal length, Minimum separation, , in the object plane of a compound microscope that can be resolved is given by
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. If the area under the B-H curve of a material M is more, in an ac solenoid using material M
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. If a species experiences a 90 percent decline over 10 years (or three generations), would be classified as :
Answer : Option B
Explaination / Solution:
A critically endangered (CR) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as facing a very high risk of extinction in the wild.
Criteria for critically endangered is an observed, estimated, inferred or suspected population size reduction of ≥ 90% over the last 10 years or three generations, whichever is the longer, where the causes of the reduction are clearly reversible AND understood AND ceased.
Critically endangered species should be protected to avoid extinction.
Q4. The correct IUPAC name of Mn3(CO)12 is
Answer : Option A
Explaination / Solution:
Ligands are named 1st followed by the name of central metal ion.
Q5. Read the following statements about gestational diabetes :
i. It must be controlled to protect baby’s growth and development.
ii. It puts women at risk for developing Type – 1 diabetes.
i. It must be controlled to protect baby’s growth and development.
ii. It puts women at risk for developing Type – 1 diabetes.
Answer : Option A
Explaination / Solution:
Gestational diabetes develops during pregnancy. It must be controlled to protect baby’s growth and development. This kind of diabetes never leads to develop type-1 diabetes.
Q6. Calculate the standard cell potentials of galvanic cell, ∆_r G^oand equilibrium constant of the reactions if the reaction is
Answer : Option A
Explaination / Solution:
Q7. Which among the following is called Portuguese man-of-war?
Answer : Option B
Explaination / Solution:
The Portuguese man-of-war is a siphonophore, an animal that is made up of a colony of organisms working together.Physalia is called Portuguese man-of-war. It is also called as blue bottle or floating terrror it is found floating on water surface. " The name comes from the uppermost polyp, a gas filled bladder, or pneumatophore, which sits above the water and somewhat looks like an old warship at full sail. They are also, known as bluebottles for the purple-blue color of their pneumatophores" (A Portuguese man of war). The tentacles can extend to 165 feet, although, the average length is 30 feet (Portuguese Man-of War Physalia physalis).
Q8. The fraction of deposits is kept as Cash Reserves by the commercial banks with the
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. When arsenic is added as an impurity to silicon, the resulting material is
Answer : Option A
Explaination / Solution:
Doping is the process of intentionally introducing impurities into an extremely pure (i.e., intrinsic) semiconductor in order to change its electrical properties. The impurities are dependent upon the type of semiconductor. Lightly and moderately doped semiconductors are referred to as extrinsic semiconductor. A semiconductor which is doped to such high levels that it acts more like a conductor than a semiconductor is called degenerate.
Dopant atoms can either be “donors” or “acceptors.” Donors increase the elctron concentration in the silicon, whereas acceptors increase the hole concentration.
When Arsenic crystal is doped with silicone atoms, then it becomes N-type.
Q10. Consumer price index is used for …………………
Answer : Option B
Explaination / Solution:
CPI is used as a measure of inflation. A CPI can be used to index the real value of wages, salaries, pensions, for regulating prices
