Chemistry-
General
Easy
Question
The chemist who helped in the discovery of the maximum number of transuranic element is:
- Sir Robert Robinson
- Sir J.J. Thomson
- Professor Sea Borg
- Sir N.C. Hishel-wood
The correct answer is: Professor Sea Borg
Related Questions to study
Chemistry-
Statement 1:Rate of ethanolysis of 
halide 
by 
mechanism is fast
Statement 2:Carbocation is stabilized by resonance
Statement 1:Rate of ethanolysis of halide by mechanism is fast
Statement 2:Carbocation is stabilized by resonance
Chemistry-General
Chemistry-
Statement 1: 
Statement 2:The product (B) results by 
mechanism and product (C) results by 
mechanism
Statement 1:
Statement 2:The product (B) results by mechanism and product (C) results by mechanism
Chemistry-General
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In the esterification of an organic acid 
by alcohol 
of acid is isotopic
Which of the following statement is correct?
In the esterification of an organic acid by alcohol of acid is isotopic
Which of the following statement is correct?
Chemistry-General
Chemistry-
The work function (
) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metals is :
The work function () of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metals is :
Chemistry-General
Chemistry-
Radioactive disintegration differs from a chemical change in being
Radioactive disintegration differs from a chemical change in being
Chemistry-General
Chemistry-
Rutherford’s scattering experiment is related to the size of the
Rutherford’s scattering experiment is related to the size of the
Chemistry-General
Chemistry-
The correct set of quantum numbers for the unpaired electron of chloride atom is
The correct set of quantum numbers for the unpaired electron of chloride atom is
Chemistry-General
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The correct set of quantum numbers for the unpaired electron of chlorine atom is:
The correct set of quantum numbers for the unpaired electron of chlorine atom is:
Chemistry-General
Chemistry-
Bombardment of aluminium by 
particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products 
and 
respectively are
Bombardment of aluminium by particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products and respectively are
Chemistry-General
Chemistry-
The radiant energy from the sun is due to
The radiant energy from the sun is due to
Chemistry-General
Chemistry-
The negative value of packing fraction indicates that the isotope is
The negative value of packing fraction indicates that the isotope is
Chemistry-General
Chemistry-
One atomic unit is equal to
One atomic unit is equal to
Chemistry-General
Physics-
The circular scale of a micrometer has 200 divisions and pitch of 2 mm. Find the measured value of thickness of a thin sheet.
The circular scale of a micrometer has 200 divisions and pitch of 2 mm. Find the measured value of thickness of a thin sheet.
Physics-General
Physics-
An Indian submarine is moving in “Arab Sagar” with a constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. Bulk modulus of sea water should be approximately (ρwater = 1000 kg/m3)
An Indian submarine is moving in “Arab Sagar” with a constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. Bulk modulus of sea water should be approximately (ρwater = 1000 kg/m3)
Physics-General
Physics-
An Indian submarine is moving in “Arab Sagar” with a constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. If the wavelength received by enemy ship is 
´ and wavelength of reflected waves received by submarine is 
then 
equals
An Indian submarine is moving in “Arab Sagar” with a constant velocity. To detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes 21% greater than the sent waves. If the wavelength received by enemy ship is ´ and wavelength of reflected waves received by submarine is then equals
Physics-General
