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Chemistry
List of top Chemistry Questions asked in NEET (UG)
The Minamata disease in Japan was caused through the pollution of water by
NEET (UG) - 1999
NEET (UG)
Chemistry
Water pollution
Terylene is a condensation polymer of ethylene glycol and
NEET (UG) - 1999
NEET (UG)
Chemistry
Types of Polymerisation Reactions
Who modified Bohr's theory by introducing elliptical orbits for electron path?
NEET (UG) - 1999
NEET (UG)
Chemistry
Structure of atom
The specific conductance of a $N / 10 \,KCl$ at $25^{\circ} C$ is $0.0112\, ohm ^{-1} cm ^{-1} .$ The resistance of cell containing solution at the same temperature was found to be $55\, ohm$. The cell constant will be
NEET (UG) - 1999
NEET (UG)
Chemistry
Electrochemistry
Cassiterite is an ore of
NEET (UG) - 1999
NEET (UG)
Chemistry
General Principles and Processes of Isolation of Elements
How many g of dibasic acid (mol. wt. 200) should be present in 100 mL of the aqueous solution to give 0.1 normality ?
NEET (UG) - 1999
NEET (UG)
Chemistry
Solutions
Bell-metal is an alloy of
NEET (UG) - 1999
NEET (UG)
Chemistry
d -and f -Block Elements
Aldol condensation will not take place in
NEET (UG) - 1999
NEET (UG)
Chemistry
Aldehydes, Ketones and Carboxylic Acids
At
$25^\circ $
C and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is constant, what volume will the oxygen occupy at 760 mm pressure?
NEET (UG) - 1999
NEET (UG)
Chemistry
States of matter
In Friedal-Craft's alkylation besides
$AlCl_3$
the other reactants are
NEET (UG) - 1999
NEET (UG)
Chemistry
Hydrocarbons
The solubility of a saturated solution of calcium fluoride is $2 \times 10^{-4}$ moles per litre. Its solubility product is
NEET (UG) - 1999
NEET (UG)
Chemistry
Equilibrium
A coordination complex compound of cobalt has molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution.On reacting this solution with excess of silver nitrate solutions, two moles of AgCl get precipitated. The ionic formula of this complex would be
NEET (UG) - 1998
NEET (UG)
Chemistry
coordination compounds
In crystals of which of the following ionic compounds would you expect maximum distance between centres of cations and anions?
NEET (UG) - 1998
NEET (UG)
Chemistry
The solid state
The first ionisation potential (in eV) of Be and B, respectively are
NEET (UG) - 1998
NEET (UG)
Chemistry
Classification of elements and periodicity in properties
Which one of these, is not compatible with arenes?
NEET (UG) - 1998
NEET (UG)
Chemistry
Hydrocarbons
At the critical micelle concentration (CMC) the surfactant molecules
NEET (UG) - 1998
NEET (UG)
Chemistry
Surface Chemistry
An aqueous solution of sodium carbonate absorbs NO and
$NO_2$
to give
NEET (UG) - 1998
NEET (UG)
Chemistry
Chemical Reactions
The vapour pressure of a solvent decreased by 10 mm o f mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20 mm o f mercury?
NEET (UG) - 1998
NEET (UG)
Chemistry
Types of Solutions
IUPAC name of
$\left[ Pt \left( NH _{3}\right)_{3}( Br )\left( NO _{2}\right) Cl \right] Cl$
is
NEET (UG) - 1998
NEET (UG)
Chemistry
coordination compounds
Aspirin is an acetylation product of
NEET (UG) - 1998
NEET (UG)
Chemistry
Chemistry in Everyday Life
Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of dilute hydrochloric acid. The compound so formed is converted into a tetrafluoroborate which is subsequently heated. The final product is
NEET (UG) - 1998
NEET (UG)
Chemistry
Amines
The second order Bragg diffraction of X-rays with $\lambda = 1.0 \mathring{A}$ from a set of parallel planes in a metal occurs at an angle $60^\circ$. The distance between the scattering planes in the crystals is
NEET (UG) - 1998
NEET (UG)
Chemistry
The solid state
In the reaction,
$4NH_3 (g) + 5O_2 \rightarrow 4NO(g) + 6H_2O (I)$
When 1 mole of ammonia and 1 mole of
$O_2$
are made to react to completion, then
NEET (UG) - 1998
NEET (UG)
Chemistry
Some basic concepts of chemistry
The Activation energy of a chemical reaction can be determined by
NEET (UG) - 1998
NEET (UG)
Chemistry
Chemical Kinetics
A 5% solution of cane sugar (MW = 342) isisotonic with 1% solution of substance X. The molecular weight of X is
NEET (UG) - 1998
NEET (UG)
Chemistry
Solutions
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