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As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :

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3 g of activated charcoal was added to 50 mL. of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is :

If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a dictionary; then the position of the word SMALL is :

An unknown alcohol is treated with the ''Lucas reagent'' to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:

Locus of the image of the point (2, 3) in the line $(2x−3y+4)+k(x−2y+3)=0,kϵR$, is a :

Let $f_{K}(x)=k1 (s∈_{k}x+cos_{k}x)$where $x∈R$and $k≥1$. Then $f_{4}(x)−f_{6}(x)$equals

A solid body of constant heat capacity $J/_{∘}C$ is being heated by keeping it in contact with reservoirs in two ways : (i) Sequentially keeping in contact with 2 reservoirs such that each reservoir supplies same amount of heat. (ii) Sequentially keeping in contact 8 reservoirs such that each reservoir supplies same amount of heat. In both the cases body is brought from initial temperature $100_{∘}C$ to final temperature $200_{∘}C$. Entropy change of the body in the two cases respectively is :

Synthesis of each molecule of glucose in photosynthesis involves:

If m is the A.M. of two distinct real numbers $l$and $n(l,n>1)$and$G_{1},G_{2}$ and $G_{3}$ are three geometric means between $l$and n, then $G_{1}+2G_{2}+G_{3}$equals,