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Chemistry
List of top Chemistry Questions
Which of the following have a complete octet?
KEAM - 2025
KEAM
Chemistry
Structure of atom
Which of the following is diamagnetic?
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KEAM
Chemistry
Structure of atom
Chloro benzene and acetyl chloride react with anhydrous AlCl\(_3\), to form 4-chloroacetophenone. The reaction is an example of:
KEAM - 2025
KEAM
Chemistry
Haloalkanes and Haloarenes
Choose the incorrect statement:
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KEAM
Chemistry
Some basic concepts of chemistry
Which of the following is an extensive property?
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KEAM
Chemistry
Enthalpy
Which one of the series of hydrogen spectrum is in the visible region?
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KEAM
Chemistry
Bohr's model of hydrogen atom
The correct order of boiling point:
CH\(_3\)-CH\(_2\)-CH\(_2\)-CH\(_2\)-NH\(_2\), CH\(_3\)-CH\(_2\)-NH-CH\(_2\)-CH\(_3\), CH\(_3\)-CH\(_2\)-N(CH\(_3\))\(_2\)
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KEAM
Chemistry
Expressing Concentration of Solutions
Which of the following is a non-polar molecule?
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KEAM
Chemistry
Polarity of bonds
Which among the following shows -R effect?
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KEAM
Chemistry
electron displacement effects
In the reaction \( 3Mg + N_2 \rightarrow Mg_3N_2 \), the oxidation number of Mg changes is:
KEAM - 2025
KEAM
Chemistry
Oxidation Number
Which of the following is non-aromatic?
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KEAM
Chemistry
Aromatic Hydrocarbon
Which of the following is the set of neutral oxides?
(a) \( \text{Al}_2\text{O}_3, \text{Cl}_2\text{O}_7 \), b) \( \text{N}_2\text{O}, \text{CO} \)
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KEAM
Chemistry
Oxides
In which of the following cases does manganese have a +7 oxidation state?
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KEAM
Chemistry
Transition Metals
Which of the following has the highest \( K_b \) value?
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KEAM
Chemistry
Acids and Bases
What technique is used to separate chloroform from aniline?
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KEAM
Chemistry
Distillation
What is the IUPAC name of phenyl isopentylether?
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KEAM
Chemistry
Organic Chemistry
The disease is caused by a deficiency of riboflavin.
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KEAM
Chemistry
Vitamins
When toluene is treated with chromium oxide and acetic anhydride, followed by hydrolysis, what is the product formed?
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KEAM
Chemistry
Organic Chemistry
Layer's test is used for what purpose?
KEAM - 2025
KEAM
Chemistry
Organic Chemistry
Which among the following acts as a Lewis acid?
\[ A) \text{AlCl}_3, \quad B) \text{NH}_3, \quad C) \text{OH}^-, \quad D) \text{H}_2\text{O} \]
KEAM - 2025
KEAM
Chemistry
Acids and Bases
Arrange in the order of conductivity:
\[ \text{Na, Ag, Fe, Cu} \]
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KEAM
Chemistry
Conductivity-thermal and electrical
Find the pH of the solution if \( [\text{H}^+] = 2 \times 10^{-4} \, \text{mol/L} \).
KEAM - 2025
KEAM
Chemistry
pH value
Arrange in the order of dipole moment:
\[ \text{NH}_3, \, \text{NF}_3, \, \text{H}_2\text{S}, \, \text{CHCl}_2 \]
KEAM - 2025
KEAM
Chemistry
Angular Momentum, Magnetic Dipole Moments
Common oxidation state of Cr?
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KEAM
Chemistry
Transition Metals
Find the rate constant at 310K if the initial concentration is 0.72 mol L$^{-1}$ and the final concentration is 1.44 mol L$^{-1}$ at 10 minutes.
KEAM - 2025
KEAM
Chemistry
Theories of reaction rates
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