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

Variable valency is a general feature of (a) S- block elements (b) P- block elements (c) d- block elements (d) All of these Variable valency is a general feature of (a) S- block elements (b) P- block elements (c) d- block elements (d) All of these November 10, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

A potential difference is applied across the filament of a bulb at t =0, and it is maintained at a constant value while the filament gets heated to its equilibrium temperautre. We find that the final current in the filament is one sixth of the current drawn at t = 0. if the temperature of [...]

Out of the following elements which one do you except to be most reactive chemically (a) Mg (b) Ca (c) Sr (d) Ba Out of the following elements which one do you except to be most reactive chemically (a) Mg (b) Ca (c) Sr (d) Ba November 10, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

Acidity of pentoxides in VA group (a) Decreases (b) Increases (c) Remains same (d) None Acidity of pentoxides in VA group (a) Decreases (b) Increases (c) Remains same (d) None November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following gas does not have an octet or eight electrons in the outer shell (a) Ne (b) Ar (c) Rn (d) He Which of the following gas does not have an octet or eight electrons in the outer shell (a) Ne (b) Ar (c) Rn (d) He November 10, 2020 Category: Uncategorised [...]

A typical copper wire might have 2 × 10^21 free electrons in 1 cm of its length. Suppose that the dirft speed of the electrons along the wire is 0.05 cm/s. How many electrons would pass through a given cross section of the wire each second. How large would a current be flowing in the [...]

If the difference in electronegativities of two elements is very large, then (a) The bond is 50% ionic (b) The bond is 100 % covalent (c) The bond is more covalent than ionic If the difference in electronegativities of two elements is very large then (a) The bond is 50% ionic (b) The bond is [...]

Which of the following is second most elctronegative element (a) Chlorine (b) Oxygen (c) Sulphur (d) Fluorine Which of the following is second most elctronegative element (a) Chlorine (b) Oxygen (c) Sulphur (d) Fluorine November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A beam contains 2.0 × 10^8 doubly charged positive ions per cubic centimeter, all of which are moving toward north with a speed of 1.0×10^5 m/s. (a) what are the magnitude and direction of the current density J→? (b) can you calculate the total current i in this ion beam? If not what additional informaiton [...]