Search
.Management Sciences
Category: Chemistry Basic Concept
Which of the following properties prove that cathode rays are material in nature_________________?
A. they cast shadow
B. they possess momentum
C. they are negatively charged
D. all of the above
Methyl alcohol is not used as___________________?
A. a solvent
B. an anti freezing agent
C. a substitute for petrol
D. for denaturing of ethyl alcohol
Which of the following ion formation is always exothermic ?
A. Uni-negative
B. Uni-positive
C. Di-negative
D. Di-positive
Which of the following elements conduct electricity and also melts below 100°C ?
A. Aluminium
B. Sodium
C. Carbon
D. Sulphur
The unit of the rate constant (k) is same as that of rate of reaction________________?
A. First order reaction
B. Second order reaction
C. Zero order reaction
D. Third order reaction
The nucleus of an atom of every element will always contain____________________?
A. neutrons
B. protons and electrons
C. protons
D. protons and neutrons
When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?
A. lighter
B. intermediate
C. heavier
D. are collected at same time
Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?
A. 4.0 x 10-8
B. 3.2 x 10-11
C. 2.0 x 10-8
D. 4.0 x 10-12
Recent Comments