Question : Zone refining is used for the purification of
A. Cu
B. Ag
C. Ge
D. Au
Question Listed : Ge, Chemistry,
Question : What are the number of moles of CO2 which contains 16 g of oxygen?
A. 0.25 mole
B. 0.4 mole
C. 0.2 mole
D. 0.5 mole
Question Listed : Chemistry,
Question : The ore which is found in abundance in India is
A. magnetite
B. bauxite
C. fluorspar
D. monazite
Question Listed : Monazite, Chemistry,
Question : The oldest rocks in the earths crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rocks called
A. sedimentary rocks
B. igneous rocks
C. basalt
D. granite
Question Listed : Igneous Rock, Chemistry,
Question : The oil used in the froth floatation process is
A. pine oil
B. kerosene oil
C. olive oil
D. coconut oil
Question Listed : Pine Oil, Chemistry,
Question : The octane number of zero is assigned to
A. 3-methyl octane
B. iso-octane
C. n-heptane
D. 2-methyl octane
Question Listed : N Heptane, Chemistry,
Question : The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
A. zero
B. 2
C. 5
D. 4
Question Listed : Chemistry,
Question : The number of moles of solute present in 1 kg of a solvent is called its
A. formality
B. normality
C. molarity
D. molality
Question Listed : Molality, Chemistry,
Question : The nucleus of an atom consists of
A. All of the above
B. protons and neutrons
C. electrons and protons
D. electrons and neutrons
Question Listed : Proton, Neutron, Chemistry,
Question : The nucleus of a hydrogen atom consists of
A. 1 electron only
B. 1 neutron only
C. 1 proton + 2 neutron
D. 1 proton only
Question Listed : Proton, Chemistry,
Question : The nuclear particles which are assumed to hold the nucleons together are
A. mesons
B. neutrons
C. positrons
D. electrons
Question Listed : Chemistry,
Question : The National Chemical Laboratory is situated in
A. Patna
B. Pune
C. Bangalore
D. New Delhi
Question Listed : Pune, Chemistry,
Question : The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of
A. discovery of elements
B. periodic table of contents
C. metallurgy
D. atomic structure
Question Listed : Periodic Table, Chemistry,
Question : The most malleable metal is
A. gold
B. iron
C. silver
D. platinum
Question Listed : Gold, Chemistry,
Question : The most important ore of aluminium is
A. monazite
B. haematite
C. magnetite
D. bauxite
Question Listed : Bauxite, Chemistry,