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When beryllium is bombarded with α -particles, extremely penetrating radiations which cannot be deflected by electrical or magnetic field are given out. These are:
(1) A beam of protons
(2) α -rays
(3) A beam of neutrons
(4) X-rays
Ans: A beam of neutrons
what is the easy wet test of copper?
Number of unpaired electrons in 1s 2 2s 2 2p 3 is: (1) 2 (2) 0 (3) 3 (4) 1 Ans: 3
how to prepare chlorine water
explanation of the conductometric curve plotted for AgNO3 and KCL
NOBEL GASES With their closed-shell electron design the noble gas elements of group 18 were long regarded as chemically inert. However, in 1962 Bartlett pinpoint that the ioniza
According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1x 10 -31 kg is: (1) 2.8x 10 -3 m 2 -s -1
Ratio of radii of second and first Bohr orbits of H atom: (1) 2 (2) 4 (3) 3 (4) 5 Ans: 4
Rutherford's α particle scattering experiment proved that atom has: (1) Electrons (2 )Neutron (3) Nucleus (4 )Orbitals Ans: Nucleus
show the mechanism
Q. Explain about Optical Isomerism? Optical Isomerism: -Two isomers which have almost identical physical and chemical properties like mp. B p. density. Colour etc.. But diffe
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