Tag: chemistry
Questions Related to chemistry
Which of the following is not the unit of atmosperhic pressure?
The atmospheric pressure remains unchanged throughout the earth's atmosphere.
Usually the atmospheric pressure is equal to ___________.
Pressure can be measured by using Mercuric as well as Aneroid barometer.
In human body, the pressure exerted by the cells is ________ the atmospheric pressure.
Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?
In which of the following ions, the colour is not due to $d-d$ transition?
Match the column I with column II and mark the appropriate choice.
Column I | Column II | ||
---|---|---|---|
(A) | $FeSO _4.7H _2O$ | (i) | Green |
(B) | $NiCl _2.4H _2O$ | (ii) | Light Pink |
(C) | $MNCl _2.4H _2O$ | (iii) | Pale green |
(D) | $CoCl _2.6H _20$ | (iv) | Pink |
(E) | $Cu _2Cl _2$ | (v) | Colourless |
For $Zn^{2+}$, $Ni^{2+}$, $Cu$, and $Cr^{2+}$ which of the following statements is correct?
Which of the following group contains coloured ions?
1. $Cu^+$
2. $Ti^{4+} $
3. $Co^{2+}$
4. $Fe^{2+}$