All the atoms of the world comprise of electrons, proton & neutron except that of ______________ atom in which neutron is absent ?

Related Mcqs:

1. The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron ?

   A. 159
   B. 1837
   C. 2537
   D. 10000

2. Heat transfer by ______________ is almost absent in case of fluidised bed drying operation?

   A. Radiation
   B. Conduction
   C. Convection
   D. Both B. & C.

3. Energy to be supplied to the radioactive nucleus for the emission of a neutron is ________________ MeV?

   A. 0.8
   B. 7.8
   C. 200
   D. 10000

4. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?

   A. Lack of free
   B. Excess of
   C. Decrease in
   D. None of these

5. A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?

   A. Lead
   B. Glass
   C. Mica
   D. Silver

6. Out of the following, the lowest packing of atoms exists in ____________________ crystal lattice structure?

   A. Hexagonal close, packed (hcp)
   B. Face centred cubic (fcc)
   C. Body centred cubic (bcc)
   D. Simple cubic

7. Solute atoms which cause yield point phenomenon in mild steel are/is_________________?

   A. Aluminium
   B. Boron
   C. Carbon
   D. Nitrogen

8. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about ____________ MeV?

   A. 20
   B. 200
   C. 500
   D. 2000

9. Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxy-acetylene welding is ______________ Nm3 ?

   A. 0.5
   B. 1
   C. 1/3
   D. 2.5

10. Wood is a/an ______________ material ?

    A. Amorphous
    B. Cellular
    C. Homogeneous
    D. Granular