Which group contains elements that exist as monoatomic molecule?
A. 1 B. 2 C. 14 D. 18
Chemistry MCQs
The element having electronic configuration [kr] 4d10, 4f14,5s2,5p6,5d1,6s2 belongs to __________?
A. S-Block B. P-Block C. d-Block D. f-Block
Which one of the following is a bridge element?
A. Be B. Cl C. K D. P
The common oxidation state of lanthanides is_________?
A. +3 B. +2 C. +1 D. +4
Which of the following is most soluble on water?
A. BaSO4 B. SrSO4 C. CaSO4 D. MgSO4
Which of the following orbitals has maximum penetration effect?
A. S B. P C. d D. f
The main buffer system of the human blood is____________?
A. H2CO3 – HCO3 B. H2CO3 – CO32- C. CH3COOH – CH3COO– D. NH2CONH2 – NH2CONH+
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?
A. Dalton’s law B. Gay Lussac’s law C. Henry’s law D. Raoult’s law
The molecules of which gas have highest speed?
A. H2 at -73oC B. CH4 at 300 K C. N2 at 1,027oC D. O2 at 0oC
The heat energy produced when the human body metabolises 1 gram of fat is__________?
A. 30 KJ B. 1 KJ C. 39 KJ D. 29 KJ