Class 12th

The mole fraction of glucose (C?H?O?) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is

An element with molar mass 2.7 * 10?² kg mol?¹ forms a cubic unit cell with edge length 405pm. If its density is 2.7 * 10³ kg m?³, the radius of the element is approximately * 10?¹² m (to the nearest integer).

The total number of monohalogenated organic products in the following (including stereoisomers) reaction is
A (Simplest optically active alkene) --(i) H?/Ni/Δ, (ii) X?/Δ--> Products
(Alkyl Halides)

How to remember integrals of some particular functions?

Plerase find the question below:

It is true that:

A wire of length 25 m and cross-sectional area 5 mm² having resistivity of 2 × 10⁻⁸ Ω m is bent into a complete circle. The resistance between diametrically opposite points will be

An organic compound [A], molecular formula C?H?O?, was hydrolyzed with dilute sulphuric acid to give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with CrO? – H?SO? produced [B]. Which of the following structures are not possible for [A]?