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Silica gel and alumina are used as __________________?
A. Mobile phase B. Stationary phase C. Mixed phase D. Single phase Submitted by :- Jamil Ahmed
Safe and the most reliable method of drying crystals is through______?
A. Filter paper B. Vacuum desiccators C. Oven D. None of these Submitted by :- Jamil Ahmed
A process controlled by Distributive law is__________________?
A. Crystallization B. Sublimation C. Solvent extraction D. Filtration Submitted by :- Jamil Ahmed
Different components of a mixture have different Rf values due to_____?
A. Polar solvent used B. Combination of solvents used C. Their different distribution coefficients in the solvent D. Distributive law…
Force responsible to hold atoms together in a compound is called ____?
A. Bond B. Attractive force C. Interaction D. All of above represent same entity Submitted by :- Jamil Ahmed
Measurement of the degree of polarity is___________________?
A. Electron affinity B. Ionic character C. Ionization energy D. Dipole moment Submitted by :- Jamil Ahmed
In O2 each oxygen atom is hybridized_________________?
A. sp3 B. sp2 C. sp D. All Submitted by :- Jamil Ahmed
Which of the following is the best explanation that CO2 is non polar molecule __________________?
A. Linear geometry B. Dipole moment is zero C. Sp hybridization D. None Submitted by :- Jamil Ahmed
The octet rule does not always hold for which of the following elements _________________?
A. C B. O C. F D. P Submitted by :- Jamil Ahmed
Which type of bond is formed by overlap of p orbitals _______________?
A. Pi B. Sigma C. Both D. Neither Submitted by :- Jamil Ahmed