Which one of the following statements is not correct?
A) All metals are solid at room temperature
B) All metals are good conductor of heat and electricity
C) All metals from basic oxides
D) All metals possess luster when freshly prepared
Correct Answer:
Verified
Q7: A divalent cation has 10 electrons and
Q8: The only elements having no neutron is
A)protium
B)deuterium
C)tritium
D)All
Q9: ?-particle are
A)double positive helium nucleus
B)single positive helium
Q10: Neutron was discovered by
A)J J Thomson
B)James Chadwick
C)Goldstein
D)Rutherford
Q11: Man made synthetic fibre is
A)wool
B)rayon
C)nylon
D)cotton
Q13: Among metals, the poorest conductor of heat
Q14: The correct order of electrical conductivity is
A)Al
Q15: Beakers A, B and C contain zinc
Q16: A particle is projected up with an
Q17: A stone is dropped into water from
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