Match the media component (Column I) with its role (Column II).Column I Column IIP. Sucrose 1. Anti-foam agentQ. Zinc chloride 2. Nitrogen sourceR. Ammonium sulphate 3. Carbon sourceS. Silicone oil 4. Trace element(A) P-1, Q-2, R-3, S-4(B) P-2, Q-1, R-3, S-4(C) P-3, Q-2, R-4, S-1(D) P-3, Q-4, R-2, S-

Match the Column I with column IIColumn I Column II1, Common salt from sea water A. Gel2. Suspension B. Evaporation3. Brass C. Centrifugation4. Cream from milk D. Solid in solid mixture

Which of the following compounds can be used as drying reagents?Group of answer choicesK2CO3HClH2SO4H2ONa2SO4CaSO4KCl

A brief description of four substances is given asW: It can react with both acids and bases, used to make aircrafts.X: It reacts with boiled water and not with cold water.Y: It does not react with acids and water, used to make computer chips. It is a metalloid.Z: It can displace silver from silver nitrate solution but it can not react even with steam.W, X , Y and Z respectively.(1) Zn, Mg, Si, C (2) Fe, Cu, Si, Al (3) Al, Mg, Si, C (4) Al, Mg, Si, Cu

write the chemical formulae of:-(i) Barium chloride(ii) Sodium sulphate(iii) Ammonium phosphate(iv) Calcium hydroxide(v) Aluminium carbonate(vi) Magnesium hydrogen carbonate(vii) Zinc sulphide(viii) Potassium Bromide(ix) Lead nitrate(x) Sodium Oxide(xi) Silver sulphide

Match the column  Column-ICompounds   Column-IIpKb(I) N-Methylmethanamine (a) 3.25(II) N,N-Diethylethanamine (b) 3.29(III) Ethanamine (c) 3.27(IV) Phenylmethanamine (d) 4.70A I-a, II-c, III-b, IV-d B I-c, II-b, III-a, IV-d C I-c, II-a, III-b, IV-d D I-c, II-a, III-d, IV-b