1. The non-metal which is liquid at room temperature is:a) Mercuryb) Brominec) Carbond) Helium Answer (b)BromineExplanation: Bromine is the only non-metal which exists as a liquid at room temperature. 2. The number of protons in an atom of an element A is 19 then, the number of electron in its ion A+ is:a) 18b) 19c) 20d) 21 Answer … Read more
1. Write the elements of group 15? Ans. The elements of group 15 are Nitrogen (N), Phosphorous (P) , Arsenic (As) , Antimony (Sb) and Bismuth (Bi). 2. Write chemical name & formulae of a) Chile saltpetre b) Indian saltpetre Ans. (a) Chile saltpetre – Sodium nitrate – (b) Indian saltpetre – Potasium nitrate – 3. … Read more
1. Can you store AgCl solution in Zinc pot? Ans. No. We can’t store AgCl solution in Zinc pot because standard electrode potential of Zinc is less than silver. 2. Define the term – standard electrode potential? Ans. When the concentration of all the species involved in a half-cell is unity, then the electrode potential is called … Read more
Q.1. The cell organelle involved in glycosylation of protein is(a) ribosome(b) peroxisome(c) endoplasmic reticulum(d) mitochondria Answer Answer: (c) Glycosylation is the process or result of addition of saccharides to proteins and lipids. The process is one of the four principal co-translational and post-translational modification steps in the synthesis of membrane and secreted proteins and the … Read more
Q.1. The kind of epithelium which forms the inner walls of blood vessels is(a) cuboidal epithelium(b) columnar epithelium(c) ciliated columnar epithelium(d) squamous epithelium Q.2. The cell junctions called tight, adhering and gap junctions are found in(a) connective tissue (b) epithelial tissue(c) neural tissue (d) muscular tissue Q.3. Housefly possesses(a) two pairs of wings (b) one … Read more
