Which of the following molecule is polar__________________?
Which of the following molecule is polar__________________?
A. CCI4
B. CO2
C. BF3
D. none of the above
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Acetone reacts with HCN to form a cyanohydrin. It is an example of________________?
Acetone reacts with HCN to form a cyanohydrin. It is an example of________________?A. electronphilic addition
B. electrophilic substitution
C. nucleophilic addition
D. nucleophilic substitutionAtomic radius can be determined by_________________?
Atomic radius can be determined by_________________?A. X – ray diffraction
B. Spectrophotometer
C. Optical microscope
D. Electron microscopeFormaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?A. Nylon 66
B. urotroe
C. Aniline formaldehyde plastic
D. Bakelite10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?
10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?A. % w/w
B. % w/v
C. % v/v
D. % v/wWhich of the following theories is superior to others__________________?
Which of the following theories is superior to others__________________?A. VSEPR
B. VBT
C. MOT
D. none of the aboveMostly elements have fractional atomic masses because of______________________?
Mostly elements have fractional atomic masses because of______________________?A. Mass of an atom itself is in fraction
B. Atomic masses are average masses of isobars
C. Atmoic masses are average masses of isotopes proportional to their relative abundance
D. Atmoic masses are average masses of isotopes