Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

Reaction of phenol with chloroform / sodium hydroxide to give o-hydroxy benzaldehyde involves the formation of (a) Dichloro carbene (b) Trichloro carbene (c) Chlorine atoms Reaction of phenol with chloroform / sodium hydroxide to give o-hydroxy benzaldehyde involves the formation of (a) Dichloro carbene (b) Trichloro carbene (c) Chlorine atoms February 14, 2021 Category: Uncategorised [...]

A small block in shot into each of the four smooth tracks as shown below. Each of the tracks rises to the same height. The speed with which the block enters the track is the same in all cases.At the height point of the track,the normal reaction is maximum in A string of negligible mass [...]

The number of alpha and bita – particles emitted in the nuclear reaction 90 Th^228 to 83Bi^212 are respectively The number of alpha and bita - particles emitted in the nuclear reaction 90 Th^228 to 83Bi^212 are respectively February 14, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The element with atomic number 84 and mass number 218 change to other element with atomic number 84 and mass number 214. The number of alpha and bita – particle emitted are respectively The element with atomic number 84 and mass number 218 change to other element with atomic number 84 and mass number 214. [...]

A radium 88 Ra^224 isotope , on emission of an alpha – particle gives rise to a new element whose mass number and atomic number will be A radium 88 Ra^224 isotope on emission of an alpha - particle gives rise to a new element whose mass number and atomic number will be February 14, [...]

Butanal with dilute NaOH gives Butanal with dilute NaOH gives February 14, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

92U^235 belongs to group III B of periodic table . If it lose one alpha – particle , the new element will belong to group 92U^235 belongs to group III B of periodic table . If it lose one alpha - particle the new element will belong to group February 14, 2021 Category: Uncategorised (JEE [...]

Anisole is the product obtained from phenol by the reaction known as (a) Coupling (b) Etherification (c) Oxidation (d) Esterification Anisole is the product obtained from phenol by the reaction known as (a) Coupling (b) Etherification (c) Oxidation (d) Esterification February 14, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient of friction between the surface and the insect is 1/3. If the line joining the centre of the hemispherical surface to the insect makes an angle a with the vertical, the maximum possible value of α is given A string of [...]

THe end product of 4n series is (a) 82Pb ^208 (b) 82 Pb^207 (c) 82 Pb^208 (d) none of these THe end product of 4n series is (a) 82Pb ^208 (b) 82 Pb^207 (c) 82 Pb^208 (d) none of these February 14, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,