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If the freezing point of a 0.01 molal aqueous solution of a cobalt chloride ammonia complex ( which behaves as a strong electrolyte ) is 0.0558 degree Celsius, the number of chloride in the coordination sphere of the complex is ? (kf of water = 1.86k kg/mole

An ideal gas heat engine is operated in a Carnot's cycle between ${227}^{\circ }C$ and ${127}^{\circ }C$. It absorbs $6\times {10}^{4}J$ at high temperature. The amount of heat converted into work is:

How would you name the following compounds?

(i)

(ii)

(iii)

${}^{131}I$ is an isotope of Iodine that $\beta -$ decays to an isotope of Xenon with a half-life of $8\text{days}$. A small amount of a serum labelled with ${}^{131}I$ is injected into the blood of a person. The activity of the amount of ${}^{131}I$ injected was $2.4\times {10}^5\text{Becquerel (Bq)}$. It is known that the injected serum will get distributed uniformly in the blood stream in less than half an hour. After $11.5\text{hours},2.5\text{ml}$ of blood is drawn from the person's body, and gives an activity of $115\text{Bq}$. The total volume of blood in the person's body, in $\text{liters}$ is approximately _______.

For the reaction $A{g}_{2}O\left(s\right)\to 2Ag\left(s\right)+\frac{1}{2}{O}_2\left(g\right)$ which one of the following is true?

In order to coagulate $400\text{ml}$ of $Fe(OH{)}_3$ sol completely, $60\text{ml}$ of $0.1\text{M}$ $KCl$ is required. What will be the coagulation value of $KCl$?

The number of ions present in $K_3\left[Fe\right(CN{)}_6]$ are

What is the difference between 1g atom of nitrogen and 1 g of nitrogen

Which of the carbonates given below is unstable in air and is kept in $C{O}_2$ atomosphere to avoid decomposition?
(a) $BeC{O}_3$ (b) $MgC{O}_3$ (c) $CaC{O}_3$ (d) $BaC{O}_3$

The oxidation state of $Cl$ in $CaOC{l}_2$ is

An alkybromide(A) On treatment with Na and ether gives a hydrocarbon (B). (B) on treatment with HBr and peroxide gives $Br-(C{H}_2{)}_6-Br$ compound (A) is

In the reaction, the product (A) has the structure:

The minimum quantity of cement content needed in $1m^3$ of a reinforced concrete which is exposed to weather is (in kg)

Which of the following is imino acid

For a reaction: $X\to Y+Z$
The absolute entropies for $X,Y$ and $Z$ are $120J{K}^{-1}mo{l}^{-1},213.8J{K}^{-1}mo{l}^{-1}and197.9J{K}^{-1}mo{l}^{-1}$ respectively.
What will be the entropy change of the reaction at 298 K and 1 atm?

In a sodium crystal, the difference between two consecutive energy levels is approximately -

Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at ${25}^{\circ }C$ ?

When 3-methylbutan-2-ol is treated with HBr; the following reaction takes place.

The concept of electronegativity is not applicable to an element having which of the following outer shell configurations?