Which of the following molecule is polar__________________?
A. CCI4
B. CO2
C. BF3
D. none of the above
Submitted by :- Jamil Ahmed
Which of the following elements has greater 1st ionization energy__________________?
A. B
B. C
C. N
D. O
Submitted by :- Jamil Ahmed
Which catalyst is used in contact process ?
A. Fe2O3
B. V2O5
C. SO3
D. Ag2O
Submitted by :- Jamil Ahmed
Equal masses of methane and oxygen are mixed in empty container at 25?(C) The fraction of total pressure exerted by oxygen is___________________?
A. one / seventeen
B. sixteen / seventeen
C. one / three
D. two / three
Submitted by :- Jamil Ahmed
A method of separation of components from its solution using Distribution law is ___________________?
A. Sublimation
B. Crystallization
C. Solvent extraction
D. Distillation
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Water absorber used in combustion analysis is___________________?
A. 5% KOH
B. Lime water
C. CaCl2
D. Mg (CIO4)2
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Isotopes differs in______________________?
A. arrangement of electrons in orbitals
B. position in the periodic table
C. properties depend upon mass
D. chemical properties
Submitted by :- Jamil Ahmed