Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions in Chemistry
Questions
>>
JEEMAIN and NEET
>>
Chemistry
Chemistry
Some Basic concepts in Chemistry
Atomic Structure
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
Chemical Thermodynamics
Equilibrium
Redox Reactions
Hydrogen
s-Block Elements
p-Block Elements
P-Block elements (Group-13 and Group-14)
Hydrocarbons
Some Basic principles of Organic chemistry
Environmental Chemistry
States of Matter: Liquids and Gases
States of Matter: Solid State
Solutions
Electrochemistry
Surface Chemistry
General Principals and Processes of Isolation of Metals
p-Block elements (Group-15 to Group-18)
d-and-f-Block Elements
Co-ordination Compounds
Halogens
Oxygen: Alchohols, Phenols and Ethers
Nitrogen
Polymers
Biomolecules
Chemistry in everyday life
Practical Chemistry
Chemical Kinetics
Purification and Characterisation of Organic Compounds
Oxygen: Aldehydes, Ketones and Carboxylic Acids
Which set of elements contains a metalloid?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
classification-of-elements
asked
Mar 15, 2014
by
meena.p
1
answer
When combining with nonmetallic atoms, metallic atoms generally will
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
metallic-non-metallic
basics
asked
Mar 15, 2014
by
meena.p
1
answer
Arrange the following in order of increasing ionization energies: Ar, Se, S.
classification-of-elements-and-periodicity-of-properties
jeemain
chemistry
cbse
class11
easy
periodicity
ionization-enthalphy
inorganic-chemistry
ch3
asked
Mar 15, 2014
by
balaji.thirumalai
1
answer
Which halogens are gases at $STP?$
jeemain
cbse
chemistry
class11
classification-of-elements-and-periodicity-of-properties
easy
classification-of-elements
ch3
basics
asked
Mar 15, 2014
by
meena.p
1
answer
Which element in Group 15 has the strongest metallic character?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
classification-of-elements
basics
asked
Mar 15, 2014
by
meena.p
1
answer
Linus Pauling defined electronegativity as the power of an atom in a molecule to attract electrons. Given the bond disassociation enthalpies, $\varepsilon_{C-C} = 348\; \text{ kJ/mol}, \varepsilon_{C-H} = 412 \; \text{ kJ/mol}, \varepsilon_{H-H} = 436 \; \text{ kJ/mol}$, what is the Pauling elctronegativity of $C$? (Electronegativity of $H$ is $2.1$)
classification-of-elements-and-periodicity-of-properties
jeemain
chemistry
cbse
class11
ch3
medium
periodicity
electronegativity
inorganic-chemistry
asked
Mar 15, 2014
by
balaji.thirumalai
1
answer
Given the following assertion and reason, choose the correct answer:
classification-of-elements-and-periodicity-of-properties
jeemain
chemistry
cbse
class11
ch3
easy
periodicity
electron-gain-enthalpy
inorganic-chemistry
basics
asked
Mar 15, 2014
by
balaji.thirumalai
1
answer
A burning strip of Magnesium is introduced into a jar containing a gas. After sometime the walls of the container are coated with carbon. The gas in the container is:
jeemain
chemistry
s-block-elements
cbse
class11
unit10
easy
asked
Mar 15, 2014
by
balaji.thirumalai
1
answer
Which of the following presents the correct sequence of increasing basic nature of given oxides?
jeemain
chemistry
s-block-elements
cbse
class11
unit10
easy
asked
Mar 15, 2014
by
balaji.thirumalai
1
answer
According to periodic table, which of the following elements has the smallest atomic radius?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
periodicity
atomic-radius
inorganic-chemistry
basics
asked
Mar 14, 2014
by
meena.p
1
answer
When a metal atom combines with a nonmetal atom, the nonmetal atom will
jeemain
chemistry
inorganic-chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
metallic-non-metallic
basics
asked
Mar 14, 2014
by
meena.p
1
answer
Which compound forms a colored aqueous solution?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
classification-of-elements
basics
asked
Mar 14, 2014
by
meena.p
1
answer
Which element has the highest first ionization energy?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
periodicity
ionization-enthalphy
inorganic-chemistry
basics
asked
Mar 14, 2014
by
meena.p
1
answer
Which three groups of the Periodic Table contain the most elements classified as metalloids (semimetals)?
jeemain
cbse
chemistry
class11
ch3
classification-of-elements-and-periodicity-of-properties
easy
classification-of-elements
metallic-non-metallic
basics
asked
Mar 14, 2014
by
meena.p
1
answer
In exothermic reaction
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
Bomb calorimeter used for determining change in internal energy at constant _____
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
Which of the following statement is false
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
For spontaneous reaction $\Delta G$ is
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
During fusion, the entropy of the system
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
At constant temperature and pressure which one of the following statements is correct for the reaction? $CO_{(g)} +\large\frac{1}{2}$$O_2 (g) \longrightarrow CO_2(g)$
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
In a reversible adiabatic change $\Delta S$ is
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
easy
asked
Mar 14, 2014
by
meena.p
1
answer
In which of the following process does the entropy decrease?
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 14, 2014
by
meena.p
1
answer
Heat of neutralization of a strong acid and weak base is
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
medium
asked
Mar 14, 2014
by
meena.p
1
answer
In an exothermic reaction , heat is
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
medium
asked
Mar 14, 2014
by
meena.p
1
answer
Which of the following is Nylon-2-nylon-6
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Match list I with list II and select the correct answer using the codes below :
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Which of the following is a fully fluorinated polymer?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
The monomers of polymers :
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
If the average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000.The poly dispersity index of the polymer is
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Acrilon is a hard and a high melting material.Which of the following represents its structure?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Which of the following is not correctly matched?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Soft drinks and baby feeding bottles are generally made up of
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
When a gas at high pressure expands into a region of low pressure , then its temperature
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 14, 2014
by
meena.p
1
answer
For an ideal gas at constant temperature , $C_v$ is
jeemain
cbse
chemistry
class11
unit6
medium
asked
Mar 14, 2014
by
meena.p
1
answer
Which is not true about polymers?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Which of the following statements are correct?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Interparicle forces in nylon-66 are
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Which of the following statement is not correct regarding vinylic polymerisation?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Polymerisation of acrylonitrile must be carried out under
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 14, 2014
by
sreemathi.v
1
answer
Two moles of an ideal gas expand spontaneously into a vaccum. The work done is
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 13, 2014
by
meena.p
1
answer
The Joule-Thomson expansion of an ideal gas is an
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 13, 2014
by
meena.p
1
answer
In isothermal change which of the following parameter is constant
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 13, 2014
by
meena.p
1
answer
A system which can change neither matter nor energy with the surroundings is called
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
medium
asked
Mar 13, 2014
by
meena.p
1
answer
Structure of a reagent used for initiating free radical chain reaction
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 13, 2014
by
sreemathi.v
1
answer
Which of the following arent alliphatic polymers which are commercially potential biomaterials?
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 13, 2014
by
sreemathi.v
1
answer
Calculate the enthalpy change when $50\; ml$ of $0.01\; M Ca(OH)_2$ reacts with $25\; ml$ of $0.01 \;M HCl.$ Given that $\Delta H^0_{neut}$ of a strong acid and strong base is $140$ cal/ equivalent
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
difficult
asked
Mar 13, 2014
by
meena.p
1
answer
PDI=1 for which kind of polymers
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 13, 2014
by
sreemathi.v
1
answer
The heat of neutralization is highest in
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
cbse
chemical-thermodynamics
class11
unit6
difficult
asked
Mar 13, 2014
by
meena.p
1
answer
The polydispersity index is
jeemain
aipmt
chemistry
polymers
class12
unit15
difficult
asked
Mar 13, 2014
by
sreemathi.v
1
answer
For the reaction : $C_7H_8(I)+9O_2(g) \longrightarrow 7CO_2(g) +4H_2O(I)$, the calculated heat of reaction is $232\; kJ/mol$ and observed heat of reaction is $50.4\; kJ/mol,$ then the resonance energy is
jeemain
cbse
chemistry
chemical-thermodynamics
class11
unit6
difficult
asked
Mar 13, 2014
by
meena.p
1
answer
Page:
« prev
1
...
26
27
28
29
30
31
32
...
86
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...