Chemistry lectures are based on CBSE XI and XII syllabus. It also includes problems discussion related to NEET and JEE preparation.
91. Identify a molecule which does not exist. (1) He2 (2) Li2 (3) C2 (4) O2 Chemistry Notes Download Physics Notes Download Biology Notes Download 92. Find out…
46. The number of sigma (σ) and π(π) bonds in pent-2-en-4-yne is- (1) 10 σ bonds and 3π bonds (2) 8 σ bonds and 5π bonds (3) 11 σ bonds…
46. The correct order of N-compounds in its decreasing order of oxidation states is (1) HNO3, NH4Cl, NO, N2 (2) HNO3, NO, NH4Cl, N2 (3) HNO3, NO, N2, NH4Cl (4)…
1. Which of the following is a sink for CO?(1) Micro-organisms present in the soil (2) Oceans(3) Plants (4) Haemoglobin Chemistry Notes Download Physics Notes Download Biology Notes Download2. The…
46. Which one of the following compounds shows the presence of intramolecular hydrogen bond?(A) H2O2 (B) HCN(C) Cellulose(D) Concentrated acetic acid Chemistry Notes Download Physics Notes Download Biology Notes…
46. Consider the molecules CH4,NH3 and H2O. Which of the given statements is false?(1)The H – C – H bond angle in CH4, the H – N – H bond…