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Chemistry
List of top Chemistry Questions
Complete the equation : \[ CH_3CHO + H_2NNH_2 \longrightarrow ? \]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Aldehydes And Ketones
Why is \(CH_3CHO\) more reactive than acetone towards reaction with HCN ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Aldehydes And Ketones
Arrange the following compounds in increasing order of their acidic strengths : \[ CH_3CH(Br)CH_2COOH,\qquad CH_3CH(CH_3)COOH,\qquad CH_3CH_2CH(Br)COOH \]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Carboxylic Acids
How do you convert Benzoic acid to Benzene ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Carboxylic Acids
How do you convert Acetonitrile to Acetone ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Aldehydes And Ketones
How do you convert Acetophenone to Benzoic acid ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Aldehydes, Ketones and Carboxylic Acids
why is \([Ni(H_2O)_6]^{2+}\) coloured ? [Atomic number of Ni = 28]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Coordination Compounds
Write the oxidation state and hybridisation of the central metal in the following complex : \[ [Fe(H_2O)_6]^{3+} \] [Atomic number of Fe = 26]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Bonding in Coordination Compounds
A coordination compound \(CrCl_3 \cdot 6H_2O\) is mixed with excess of \(AgNO_3\) solution, two moles of \(AgCl\) are precipitated per mole of the compound. Write the structural formula of the coordination compound.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Coordination Compounds
Which type of isomerism is exhibited by the following complex ? \[ [Pt(NH_3)_2Cl_2] \]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Isomerism in Coordination Compounds
Differentiate between homoleptic complex and heteroleptic complex.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Coordination Compounds
Write the IUPAC name of the following complex : \[ K_3[Cr(C_2O_4)_3] \]
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Nomenclature of Coordination Compounds
The rate for the following reaction is given by : \[ A+B \rightarrow C \] \[ \text{Rate}=k[A][B]^2 \]
(i) How is the rate of reaction affected if we double the concentration of \(B\) ?
(ii) Write the overall order of a reaction if \(A\) is present in large excess.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Rate of a Chemical Reaction
Define order of a reaction.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Order of reaction
How will you confirm the presence of five -- OH groups in a glucose molecule, which are attached to different carbon atoms ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Glucose
Write any two fat soluble vitamins.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Vitamins
What are essential amino acids ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Proteins
What are the products obtained on hydrolysis of sucrose ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Carbohydrates
How will you convert nitromethane to methyl isocyanide ?
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Amines
Complete the following equation :
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Amines
Define limiting molar conductivity.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Conductance of Electrolytic Solutions
Name the cell which was used in the Apollo space programme for providing electrical power.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Fuel Cells
State Henry's law. Calculate the mole fraction of \(CO_2\) in water at \(298\,K\) under \(760\,mm\,Hg\).
(Given : \(K_H\) for \(CO_2\) in \(H_2O\) at \(298\,K = 1.25 \times 10^6\,mm\,Hg\))
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Raoult’s Law and Henry’s Law
1.00 molal aqueous solution of trichloroacetic acid is heated to its boiling point. Boiling point of this solution was found to be \(100.18^\circ C\). Calculate the van't Hoff factor for trichloroacetic acid.
(Given : \(K_b\) for water \(= 0.512\;K\,kg\,mol^{-1}\))
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Colligative Properties
Write the product when benzaldehyde reacts with \(Zn(Hg)/\)conc. HCl.
CBSE Class XII - 2026
CBSE Class XII
Chemistry
Aldehydes And Ketones
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