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questions
List of practice Questions
In the nuclear process,
11
22
Na →
10
22
Ne + e
+
+ ν
e
, then X is
KEAM - 2025
KEAM
Physics
Nuclear physics
In a semiconductor crystal, the total number of electrons in the outer shell is 4N . At absolute zero, the number of energy states of valence and conduction band are respectively
KEAM - 2025
KEAM
Physics
Semiconductor electronics: materials, devices and simple circuits
Which of the following is non-aromatic?
KEAM - 2025
KEAM
Chemistry
Aromatic Hydrocarbon
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\(_3\))\(_2\)
KEAM - 2025
KEAM
Chemistry
Expressing Concentration of Solutions
Which of the following is a non-polar molecule?
KEAM - 2025
KEAM
Chemistry
Polarity of bonds
Which among the following shows -R effect?
KEAM - 2025
KEAM
Chemistry
electron displacement effects
Which one of the series of hydrogen spectrum is in the visible region?
KEAM - 2025
KEAM
Chemistry
Bohr's model of hydrogen atom
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 an extensive property?
KEAM - 2025
KEAM
Chemistry
Enthalpy
Choose the incorrect statement:
KEAM - 2025
KEAM
Chemistry
Some basic concepts of chemistry
Which is a heterocyclic compound?
KEAM - 2025
KEAM
Chemistry
Classification Of Organic Compounds
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
Which of the following have a complete octet?
KEAM - 2025
KEAM
Chemistry
Structure of atom
Acetone can be converted to 2-methylpropan-2-ol using:
KEAM - 2025
KEAM
Chemistry
carbonyl compounds
N\(_2\) exerts partial pressure of 7.698 bar in 1L water at 298K. What is the mole fraction of N\(_2\) in the solution? Given that N\(_2\) = 76.48K bar.
KEAM - 2025
KEAM
Chemistry
Expressing Concentration of Solutions
Which of the following is diamagnetic?
KEAM - 2025
KEAM
Chemistry
Structure of atom
KMnO\(_4\) on heating at 513K produces:
KEAM - 2025
KEAM
Chemistry
d -and f -Block Elements
IUPAC name of the compound [Cr(H\(_2\)O)\(_3\)(NH\(_3\))\(_3\)]Cl\(_3\)
KEAM - 2025
KEAM
Chemistry
Nomenclature of Coordination Compounds
Square planar compound is:
KEAM - 2025
KEAM
Chemistry
Isomerism in Coordination Compounds
A compound formed by reacting CoCl\(_2\) with excess NH\(_3\) gives 1 mol of AgCl with AgNO\(_3\). Form the compound:
KEAM - 2025
KEAM
Chemistry
Structure of atom
The element that has the highest melting point in the 3d series is:
KEAM - 2025
KEAM
Chemistry
d -and f -Block Elements
The reagent for Etard's reaction is:
KEAM - 2025
KEAM
Chemistry
Aldehydes, Ketones and Carboxylic Acids
Which element in the 3d series can form dihalides?
KEAM - 2025
KEAM
Chemistry
d -and f -Block Elements
A body is rotated about a fixed axis. Which of the following is correct about angular velocity?
KEAM - 2025
KEAM
Physics
Angular Speed
Express the final answer to the proper number of significant figures:
\[ 18.0 + 11.515 + 13.2 = \ldots \]
KEAM - 2025
KEAM
Physics
Significant figures
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