Medical Sample papers

Question Bank for NEET Chemistry

Redox (Chemistry) Practice Paper
Share with your Friends...
Share on Facebook
Facebook
Tweet about this on Twitter
Twitter
Share on LinkedIn
Linkedin
Pin on Pinterest
Pinterest
Print this page
Print

National Eligibility Cum Entrance Test – NEET Chemistry Free Mock Test:

Online Tes for NEET Medical Entrance Exam on Chemistry single answer objective type questions as NEET / CBSE PMT exam pattern.

NEET Chemistry Test

Question 1
The boiling point of a solution of 0.11 gm of a substance in 15 gm of ether was found to be 0.1o C higher than that of the pure ether. The molecular weight of the substance will be (Kb = 2.16)
A
168
B
178
C
158
D
148
Question 2
In the reaction The compound X is
A
o-xylene
B
Benzoic acid
C
Phthalic anhydride
D
Phthalic acid
Question 3
How many grams of CaC2O4 will dissolve in distilled water to make one litre of saturated solution? (Solubility product of CaC2O4 is 2.5  10–9 mole2 litre–2 and its molecular weight is 128)
A
0.0064 gm
B
0.0128 gm
C
0.0032 gm
D
0.0640 gm
Question 4
A
Increases the frequency of collisions of reacting species
B
Increases the average kinetic energy of reacting molecules
C
Alters the reaction mechanism
D
Increases the activation energy
Question 5
The order of decreasing ease of reaction with ammonia is
A
esters, ethers, anhydrides
B
ethers, anhydrides, esters
C
anhydrides, ethers, esters
D
anhydrides, esters, ethers
Question 6
Which of the following compound gives dye test
A
Methylamine
B
Aniline
C
Diphenylamine
D
Ethylamine
Question 7
Choose the correct IUPAC name of the compound
A
2-propyl-3-pentyne
B
2, 3-dimethyl-4-hexyne
C
5-propyl-2-pentyne
D
4,5-dimethyl-2-hexyne
Question 8
At 25o C temperature the 730 mm pressure, 380 ml of dry oxygen was collected. If the temperature in the field constant, what volume will the oxygen occupy at 760 mm pressure?
A
569 ml
B
365 ml
C
449 ml
D
621 ml
Question 9
In the reaction between ozone and hydrogen peroxide, H2O2 acts as
A
Both oxidising and bleaching agent
B
Bleaching agent
C
Reducing agent
D
Oxidising agent
Question 10
What causes nitrogen to be chemically inert?
A
Short internuclear distance
B
High bond energy
C
Absence of bond polarity
D
Multiple bond formation in the molecule
Question 11
The lightest metal is
A
Cl
B
Na
C
Li
D
Ca
Question 12
Which of the following sets of quantum numbers represents the highest energy of an atom?
A
n = 4, l = 0, m = 0, s = + 1/2
B
n = 3, l = 0, m = 0, s = + 1/2
C
n = 3, l = 2, m = 1, s = + 1/2
D
n = 3, l = 1, m = 1, s = + 1/2
Question 13
To a mixture of acetic acid and sodium acetate a further amount of sodium acetate is added. Then pH of the mixture
A
unpredictable
B
decreases
C
increases
D
is unaltered
Question 14
If the average velocity of N2 molecule is 0.3 m/s at 27o C, then the velocity will be 0.6 m/s at
A
1800 K
B
1200 K
C
600 K
D
400 K
Question 15
Which of the following undergoes nucleophilic substitution by SN1 mechanism
A
Ethyl chloride
B
Benzyl chloride
C
Isopropyl chloride
D
Chlorobenzene
Question 16
One mole of potassium dichromate completely oxidises the following number of moles of ferrous sulphate in acidic medium
A
3
B
5
C
1
D
6
Question 17
Pb++, Cu++, Zn++, and Ni++ ions are present in a given acidic solution. On passing hydrogen sulphide gas through this solution the available precipitate will contain

Related: Free Online AIIMS Biology Practice and Preparation Tests

A
PbS and NiS
B
CuS and ZnS
C
CuS and NiS
D
PbS and CuS
Question 18

Related: Thermochemistry & Thermodynamics - Practice Test Questions

The electronegativity of C, H, O, N and S are 2.5, 2.1, 3.5, 3.0 and 2.5 respectively. Which of the following bond is most polar
A
O – H
B
S – H
C
C – H
D
N – H
Question 19
The amount of KMnO4 required to prepare 100 ml of 0.1 N solution in alkaline medium is
A
3.16 gm
B
1.58 gm
C
0.31 gm
D
0.52 gm
Question 20
An aqueous solution of FeCl3 (formula mass = 162) has a density of 1.1 g ml–1 and contains 20% FeCl3. Molarity of this solution is
A
0.163
B
1.27
C
0.2
D
0.028
Question 21
Which of the following elements will have the lowest electron affinity
A
Chlorine
B
Nitrogen
C
Flourine
D
Phosphorus
Question 22

Related: Chemical Analysis (NEET Chemistry) Questions

The most common lanthanide is
A
Lanthanum
B
Plutonium
C
Samarium
D
Cerium
Question 23

Related: Wave Optics Question Bank

Of the following substances the one which does not contain oxygen is
A
Bauxite
B
Dolomite
C
Cryolite
D
Epsom salt
Question 24
When the same amount of zinc is heated separately with an excess of H2SO4 and an excess of NaOH, the ratio of the volumes of hydrogen evolved is
A
1 : 2
B
3 : 2
C
2 : 1
D
1 : 1
Question 25
200 ml of phosphine decomposes to produce solid phosphorous and hydrogen. The change in volume is
A
75 ml decrease
B
100 ml decrease
C
75 ml increase
D
100 ml increase
Question 26
The Langmuir adsorption isotherm is deduced using the assumption
A
the heat of adsorption varies with coverage
B
the adsorption sites are equivalent in their ability to absorb the particles
C
the adsorbed molecules interact with each other
D
the adsorption take place in multi layers
Question 27
According to Le-Chatelier’s principle, adding heat to a solid and liquid in equilibrium will cause the
A
temperature to rise
B
temperature to fall
C
amount of solid to decrease
D
amount of liquid to decrease
Question 28
Normal aluminium electrode coupled with normal hydrogen electrode gives an  of 1.66 volts. So the standard electrode potential of aluminium is
A
– 0.83 V
B
– 1.66 V
C
+ 1.66 V
D
+ 0.83 V
Question 29
What amount of ammonia is formed when 50 g each nitrogen and hydrogen react with each other?
A
100.0 g
B
60.7 g
C
50.0 g
D
34.0 g
Question 30
A mixture of sand and iodine can be separated by
A
Crystallisation
B
Distillation
C
Fractional distillation
D
Sublimation
Question 31
Ligands in a complex are
A
molecules linked by coordinate bonds to a central metal atom or ion
B
ions or molecules linked by coordinate bonds to a central metal atom or ion
C
cations linked by coordinate bonds to a central metal atom or ion
D
anions linked by coordinate bonds to a central metal atom or ion
Question 32
The dimensions of pressure are the same as that of
A
energy
B
force
C
energy per unit volume
D
force per unit volume
Question 33
The pH of the solution: 5mL of M/5, HCl + 10 mL of M/10 NaOH is
A
3
B
5
C
7
D
8
Question 34
The common acid used in the manufacture of rayon and plastics is
A
Propanoic acid
B
Butanoic acid
C
Ethanoic acid
D
Methanoic acid
Question 35
The order of reactivity of halogen acids for reaction with C2H5OH is
A
HBr > HCl > HI
B
HCl > HBr > HI
C
HBr > HI > HCl
D
HI > HBr > HCl
Question 36
An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are 2.619 kPa and 4.556 kPa respectively, composition of the vapour (in terms of mole fraction) will be
A
0.635 methanol and 0.365 ethanol
B
0.50 methanol and 0.50 ethanol
C
0.365 methanol and 0.635 ethanol
D
0.173 methanol and 0.827 ethanol
Question 37
Reductive ozonolysis of benzene produces
A
Phthalic acid
B
Maleic anhydride
C
Glyoxal
D
Acetone
Question 38
The coordination number of a cation occupying a tetrahedral hole is
A
6
B
8
C
4
D
12
Question 39
At 100o C, Kw = 10–12. pH of pure water at 100o C will be:
A
8.0
B
6.0
C
7.0
D
12.0
Question 40
If concentration of reactants is increased by ‘x’, then K becomes
A
K/x
B
ln (K/x)
C
K
D
K + x
Question 41

Related: Thermodynamics questions and answers PDF (Physics)

The temperature above which a gas remains ideal over a wide range of pressure is called
A
critical temperature
B
Boyle’s temperature
C
boiling point
D
ideal temperature
Question 42
In the below reaction the compound A is 237-chemistry
A
None of these
B
1, 2-dibromo ethane
C
Ethylene bromohydrin
D
Ethanol
Question 43
Amorphous solids may also be classified as
A
supercooled solids
B
superheated liquids
C
superheated solids
D
supercoolied liquids
Question 44

Related: Zoology Objective & Practice Questions (NEET Biology)

How many milliliters of 6.0 M HQ should be used to prepare 150 ml of a solution which is 0.3 M in hydrogen ion?
A
0.3
B
–30
C
3.0
D
7.5
Question 45
Nature of the bond formed between two elements depends on the
A
Oxidation potential
B
Ionization potential
C
Electronegativity
D
Electron affinity
Question 46
The electrons identified by quantum numbers n and l (i) n = 4, l = 1 (ii) n = 4, l = 0 (iii) n = 3, l = 2 (iv) n = 3, l = 1 can be placed in order of increasing energy from the lowest to highest, as
A
(iv) < (ii) < (iii) <(i)
B
(i) < (iv) < (Ii) < (iii)
C
(ii) < (iv) < (i) < (iii)
D
(i) < (iii) < (ii) < (iv)
Question 47

Related: Halogen Containing Compounds Question Bank for JEE Main & Advanced Chemistry

A radioactive element has a half-life of 20 minutes. How much time should elaspe before the element is reduced to 1/8 th of the original mass
A
40 minutes
B
80 minutes
C
160 minutes
D
60 minutes
Question 48
Temporary hardness of water is due to the pressure of
A
calcium carbonate
B
magnesium sulphate
C
magnesium bicarbonate
D
calcium chloride
Question 49
The element which has most stable +2 state
A
C
B
None of these
C
Sn
D
Si
Question 50
How much of CaCO3 (in grams) should be decomposed to get enough CO2 which can convert 0.1 mole of Na2CO3 into NaHCO3?
A
5.0 g
B
100.0 g
C
10.0 g
D
20.0 g
Question 51
A solution of a salt of a metal was electrolysed for 150 minutes with a current of 0.15 amperes. The weight of metal deposited was 0.783 gm. The equivalent weight of the metal is
A
75.97 gm
B
55.97 gm
C
85.97 gm
D
65.97 gm
Question 52
In a photochemical reaction, the ratio of number of dissociate molecules and number of quanta of absorbed energy is called
A
Einstein
B
Quantum efficiency
C
Planck constant
D
Quantum constant
Question 53
In the thermal dissociation of PCl5, the partial pressure in the gaseous equilibrium mixture is 1.0 atmosphere when half of PCl5 is found to dissociate. The equilibrium constant of the reaction (Kp) in atmosphere is
A
1.00
B
0.25
C
0.3
D
0.50
Question 54
An example of a salt dissolved in water to give acidic solution is
A
potassium nitrate
B
sodium acetate
C
barium bromide
D
ammonium chloride
Question 55
At 500 K, the half life period of a gascons reaction at an initial pressure of 80 K Pa is 350 s. When the pressure is 40 K Pa, the half life period is 175 s, the order of the reaction is
A
zero
B
two
C
cannot be predicted
D
one
Question 56
Which functional group participates in disulphide bond formation in proteins
A
Thiol
B
Thiolactone
C
Thioester
D
Thioether
Question 57
The most stable oxidation state of Mn is
A
+5
B
+2
C
+4
D
+7
Question 58
The efficiency of enzyme catalys is due to its capacity to
A
change the shape of the substrate
B
decrease the bond energies in substrate molecules
C
form a strong enzyme-substrate complex
D
form a colloidal solution in water
Question 59
If 60% of the first order reaction was completed in 60 minutes, of the (given log 4 = 0.60; log 5 = 0.69) same reaction would be completed in approximately
A
40 minutes
B
45 minutes
C
50 minutes
D
60 minutes
Question 60

Related: Hydrogen and its compounds

Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon
A
2p
B
3s
C
2s
D
1s
Question 61
A deuteron contains
A
2 neutrons and 1 proton
B
1 neutron and 1 proton
C
1 neutron and 1 positron
D
1 neutron and 2 protons
Question 62
Same mass of CH4 and H2 is taken in container. The partial pressure caused by H2 is

Related: KCET Previous Year Question Paper for Biology

A
1 / 2
B
8 / 9
C
1 / 9
D
1
Question 63
The temperature coefficient of most of the reactions lies between
A
2 and 4
B
1 and 3
C
1 and 4
D
2 and 3
Question 64
What is the entropy change (in JK–1 mol–1) when one mole of ice is converted into water at 0o C (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol–1 at 0oC)
A
2.198
B
21.98
C
20.13
D
2.013
Question 65
The ability of a catalyst to accelerate the chemical reaction is known as
A
Activity
B
Selectivelty
C
None of these
D
Negative catalyst
Question 66
In the following compounds The order of acidity is
A
IV > III > I > II
B
I > IV > III > II
C
II > I > III > IV
D
III > IV > I > II
Question 67

Related: Bonding and Coordination Chemistry

Aldehydes are produced in atmosphere by
A
Reduction of alkenes
B
Reaction of oxygen atoms with ozone
C
Reaction of oxygen atoms with hydrocarbons
D
Oxidation of secondary alcohols
Question 68
The co-ordination number of an atom or ion in solid is the
A
oxidation number of that atom or ion
B
number of coordinate bonds formed with that atom or ion
C
number of nearest neighbours of that atom or ion
D
formal charge on that atom or ion
Question 69
Which of the following is an extensive property
A
chemical potential
B
Gibb’s free energy
C
Molar volume
D
temperature
Question 70
Wax is an example of
A
Covalent crystal
B
Ionic crystal
C
Molecular crystal
D
Metallic crystal
Question 71
TiH1.73 is an example of
A
Covalent hydride
B
Polymeric hydride
C
Ionic hydride
D
Metallic hydride
Question 72
If 20 ml of methane (measured at room temperature) is burnt in 50 ml of oxygen, the volume of the gases left after cooling to room temperature will be
A
70 ml
B
30 ml
C
20 ml
D
50 ml
Question 73
Nuclides
A
Have specific atomic numbers
B
Are isotopes
C
Have specific atomic number and mass numbers
D
Have same number of protons
Question 74

Related: Carboxylic Acid Derivatives PDF (Chemistry)

What causes nitrogen to be chemically inert?
A
Short internuclear distance
B
Absence of bond polarity
C
High bond energy
D
Multiple bond formation in the molecule
Question 75
The total number of stereoisomeric forms of C6H6Cl6 known is
A
8
B
7
C
6
D
3
Question 76
Froth floatation process for the concentration of ores is an illustration of the practical application of
A
adsorption
B
sedimentation
C
absorption
D
coagulation
Question 77
The oxidation state of Fe in K4[Fe(CN)6] is
A
+4
B
+2
C
+3
D
–2
Question 78
Which of the following metals will not react with solution of CuSO4
A
Mg
B
Zn
C
Ag
D
Fe
Question 79
The standard enthalpy or the decomposition of N2O5 to NO2 is 58.04 kJ and standard entropy of this reaction is 176.7 J/K. The standard free energy change for this reaction at 25o C is
A
5.38 kJ
B
–5.38 kJ
C
5.38 kJ
D
–538 kJ
There are 79 questions to complete.
Share with your Friends...
Share on Facebook
Facebook
Tweet about this on Twitter
Twitter
Share on LinkedIn
Linkedin
Pin on Pinterest
Pinterest
Print this page
Print

About the author

Vishal Arora

Leave a Comment