Words Of Foreign Origin
5 moles of SO2 and 5 moles of O2 are allowed to react. At equilibrium, it was found that 60% of SO2 is used up. lf the partial pressure of the equilibrium mixture is one atmosphere. the partial pressure of O2 is
Which one of the following DOES NOT involve coagulation?
Formation of delta region
Clotting of blood by the use of ferric chloride
Treatment of drinking water by potash alum
Which one of these is NOT TRUE for benzene?
It forms only one type of monosubstituted product
There are three carbon-carbon single bonds and three carbon-carbon double bonds
Heat of hydrogenation of benzene is less than the theoretical value
The bond angle between carbon-carbon bonds is 120Â°
A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is
A complex compound in which the oxidation number of a metal is zero is
K4 [Fe (CN)6]
K3 [Fe (CN)6]
[Pl (NH3 )4]Cl2
Which of the following gives an aldehyde on dry distillation?
Calcium acetate + calcium benzoate
Calcium formate + calcium acetate
Which of the following does not give benzoic acid on hydrolysis?
A diabetic person carries a pocket of Glucose with him always, because
Glucose reduces the blood sugar level.
Glucose increases the blood sugar level almost instantaneously.
Glucose reduces the blood sugar level slowly.
Glucose increases the blood sugar level slowly.
A ligand can also be regarded as
A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is ______.
Which is not the correct statement about RNA and DNA?
DNA is active in virus where RNA never appears in virus
DNA exists as dimer while RNA is usually single stranded
DNA contains deoxyribose as its sugar and RNA contains ribose
RNA contains uracil in place of thymine (found in DNA) as a base
Which cycloalkane has the lowest heat of combustion per CH2 group?
According to Bayer's strain theory which is highly stable?
Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirms the presence of
N and S
S and Cl
An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be
a primary amine
a secondary amine-
a tertiary amine
a mixture of all the three
An element with atomic number 21 is a
The ozone layer forms naturally by
the interaction of CFC with oxygen
the interaction of UV radiation with oxygen
the interaction of IR radiation with oxygen
the interaction of oxygen and water vapour
The number of naturally occurring p-block elements that are diamagnetic is ______.
An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______.
a primary alcohol
a secondary alcohol
Based on the first law of thermodynamics, which one of the following is correct?
For an adiabatic process: DU = -w
For an isochoric process: DU = -q
For a cyclic process: q = -w
For an isothermal process: q = +w
The typical range of molar enthalpies for the strongest intermolecular (Hydrogen) bonds is
200 – 300 kJ
300 – 500 kJ
4 – 25 kJ
4 – 25 J
Carbon can reduce ferric oxide to iron at a temperature above 983 K because ______.
carbon has a higher affinity towards oxidation than iron.
carbon monoxide formed is thermodynamically less stable than ferric oxide.
iron has a higher affinity towards oxygen than carbon.
free energy change for the formation of carbon dioxide is less negative than that for ferric oxide.
Catalytic dehydrogenation of a primary alcohol gives a
Chloroacetic acid is a stronger acid than acetic acid. This can be explained using ______.
- I effect
- M effect
+ M effect
Cooking is fast in a pressure cooker, because
food is cooked at constant volume.
loss of heat due to radiation is minimum.
food particles are effectively smashed.
water boils at higher temperature inside the pressure cooker.
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