List of top Chemistry Questions

Which of the following is the structure of pyrosulphuric acid?
The van’t Hoff Factor (i) for a dilute aqueous solution of \( \text{Na}_2\text{SO}_4 \) is
Indicate the major product of the following reaction:

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In a conductance experiment, aqueous \( \text{AgNO}_3 \) solution is added to aqueous \( \text{KCl} \) solution gradually and simultaneously the molar conductivity (\( \lambda_m \)) is measured. The correct plot of \( \lambda_m \) versus volume of \( \text{AgNO}_3 \) solution is
A compound (X) when treated with \( \text{CuSO}_4 \) solution yields a brown precipitate. On adding hypo solution the precipitate turns white. The compound (X) is
In the following sequence of reactions, what is the end product 'Z'?
Among \( \text{N}_2\text{O} \), \( \text{ClF}_2^- \), \( \text{SO}_2 \) and \( \text{I}_3^+ \), the species having the linear structures are
The major products U and V in the following reaction are
A coordination compound CrCl\(_3 \cdot 6H_2O\) is mixed with excess AgNO\(_3\) solution, two moles of AgCl are precipitated per mole of the compound. Write the structural formula of the coordination compound.
State Henry’s law. Calculate the mole fraction of CO\(_2\) in water at 298 K under 700 mm Hg pressure. (Given: Henry’s constant for CO\(_2\) in water at 298 K = \( 1.25 \times 10^6 \) mm Hg)
Following reaction takes place in one step :
\( 2A + B \rightarrow 2C \)
How will the rate of above reaction change if the volume of the reaction vessel is decreased to one third of its original volume? Will there be any change in the order of reaction with the reduced volume?
The hybridization and geometry of $([\text{Ni}(\text{CN})_4]^{2-})$ are respectively:
Which of the following is an application of coordination compounds?
Cisplatin is used in:
Which of the following compounds will show maximum acidic strength?
Which of the following belongs to the d-block elements?
In the periodic table, actinoids belong to:
Lanthanoids are known for:
Which of the following compounds shows acidic character?
Arrange the following in increasing order of basic strength:
Match the complexes with their magnetic nature:
Which reagent converts an aldehyde into a carboxylic acid?
Identify the correct IUPAC name of the compound: $\text{CH}_3\text{–CH}_2\text{–CHO}$

एक बल्ब 150 watt निर्धारित है और यह 8% ऊर्जा प्रकाश में परिवर्तित करता है। यदि एक फ़ोटॉन की ऊर्जा \( 4.42 \times 10^{-19} \) J हो, तो बल्ब से प्रति सेकंड कितने फ़ोटॉन उत्सर्जित होते हैं? 
 

Assertion (A) : Actinoids show irregularities in their electronic configurations.
Reason (R) : In actinoids 5f, 6d and 7s orbitals are of comparable energies.