The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
A. Ethylene iodide
B. Ethylene bromide
C. Ethylene chloride
D. Ethylene fluoride
Chemistry MCQs
The volume occupied by 1.4g CO at S.T.P is___________________?
A. 22.4 dm3
B. 2.24 dm3
C. 1.12 cm3
D. 1.12 dm3
Which of the following set has all species isoelectronic__________________?
A. F – Cl – Br
B. Li+1 – Na+1 – K+1
C. F – Ne – Na+
D. H+ – H- – H
Water absorber used in combustion analysis is___________________?
A. 50% KOH
B. Lime water
C. CaCl2
D. Mg (CIO4)2
The type of filtering media used for filtration depending upon____________________?
A. Nature of reactants
B. Nature of crucible
C. Nature of product
D. Nature of precipitate
A method of separation of components from its solution using Distribution law is ___________________?
A. Sublimation
B. Crystallisation
C. Solvent extraction
D. Distillation
Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?
A. one / seventeen
B. sixteen / seventeen
C. one / three
D. two / three
The molecules of CO2 in dry ice form__________________?
A. Ionic crystal
B. Covalent crystal
C. Molecular crystal
D. Any type of crystal
Only London dispersion forces are present among the_________________?
A. Molecules of water in liquid state
B. Atoms of helium in gaseous state at high temperature
C. Molecules of hydrogen chloride gas
D. Molecules of solid iodine
Quantum number values for 3p orbitals are____________________?
A. n=3 l=2
B. n=3 l=0
C. n=3 l=1
D. n=3 l=3
