General Science - Online Test
Q1. The period of a spring oscillating simple harmonically is
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. Zeolite/permutit process is also called
Answer : Option D
Explaination / Solution:
Zeolites/Permutits are sodium alluminium silicates. There process is known as ion exchange process used to remove permanent hardness of water.
Q3. Tissue culture technique was first performed successfully by
Answer : Option B
Explaination / Solution:
plant tissue culture is the technique of in vitro maintaining and growing cells, tissue or organs in nutrient medium. Tissue culture technique was first performed successfully by White in 1932.
Q4. If is the intensity after the first Polaroid the intensity emerging from the second Polaroid kept at an angle to the first is given by
Answer : Option A
Explaination / Solution:
As per malus law when a beam of completely plane polarised light i passed through the analyser the intensity of transmitted light varies directly as the square of cosine of angle between the plane of polariser and analyser.
Q5.
A toroid wound with 60.0 turns/m of wire carries a current of 5.00 A. The torus is iron, which has a magnetic permeability of under the given conditions. H and B inside the iron are
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. How many species in the world are facing threat of extinction?
Answer : Option B
Explaination / Solution:
Nearly 700 species have become extinctin recent times and more than 15,500 species (of which > 650 are from India) which includes amphibians, gymnosperms, reptiles, birds and mammals etc. currently face the threat of extinction.
The causes of high extinction rates at present include habitat (particularly forests) lossand fragmentation, over-exploitation, biological invasions andco-extinctions.
Q7. The correct IUPAC name of K2[Zn(OH)4] is
Answer : Option C
Explaination / Solution:
OH is hydroxo ligand. Name of ligand is named first.
Q8. Which of the following is not matched correctly :
Answer : Option A
Explaination / Solution:
Adrenal cortex is mesodermal in origin. Adrenal medulla is derived from ectoderm, gonads is derived from mesoderm and thyroid and parathyroidis derived ectoderm.
Q9. In the button cells widely used in watches and other devices the following reaction takes place:
Determine E^ofor the reaction.
Determine E^ofor the reaction.
Answer : Option D
Explaination / Solution:
Q10. Which phylum has balance organs?
Answer : Option A
Explaination / Solution:
Sensory organs like antennae, eyes(compound and simple), statocysts or balance organs are present in phylum Arthropoda.
