Among halogens the highest boiling point is of___________________?
A. Florine
B. Chlorine
C. Bromine
D. Iodine
Submitted by :- Jamil Ahmed
CHEMISTRY
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Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________?
A. Covalent halides
B. Electronegative halides
C. Polymeric halides
D. Polymeric hydrides
Submitted by :- Jamil Ahmed
Oxidation state of an atom represents____________________?
A. Number of electrons gained
B. Number of electrons lost
C. Apparent charge in compound
D. Its vacancies
Submitted by :- Jamil Ahmed
Metallic characters of alkali metals_____________________?
A. Increase down the group
B. Decrease down the group
C. No regular trend
D. Remain same
Submitted by :- Jamil Ahmed
Addition of 2nd electron to a uni negative ion is always____________________?
A. Exothermic
B. Endothermic
C. Data is insufficient
D. Unpredictable
Submitted by :- Jamil Ahmed
Ionization energy depends upon____________________?
A. Nuclear charge
B. Atomic size
C. Shielding effect
D. I.E depends upon all of the above and nature of orbital
Submitted by :- Jamil Ahmed
Deuterium reacts with oxygen to form________________?
A. Hard water
B. Heavy water
C. Soft water
D. Water gas
Submitted by :- Jamil Ahmed
Which discovery caused a revision in the periodic law as stated by Mendeleev ?
A. Location of nucleus by Rutherford
B. Atomic number by Moseley
C. X-rays by Roentgen
D. Natural radioactivity by Henry Bacquerel.
Submitted by :- Jamil Ahmed
Which one of the following is not a periodic property ?
A. Melting point of elements
B. Boiling point of elements
C. Ionization energy of elements
D. Coordination number of ions
Submitted by :- Jamil Ahmed
The complete reduction carboxylic acid results in the formation of________________?
A. Alkyne
B. Alkene
C. Alkane
D. Alcohol
Submitted by :- Jamil Ahmed