1 - In the van der Waals equation (P + n2a / v2) (v - nb) = nRT which of the following statement is not true?
at high densities the equation reduces to the ideal gas law
2 - Methyl alcohol is not used as
a substitute for petrol
3 - The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent.
alkaline aquenous iodine
4 - Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse?
40cm3/min
5 - When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show?
a hydroxy group makes the benzene ring more susceptible to electrophilic attack
6 - As a substance moves from a solid to a liquid all of the following changes occur except:
K.E of the molecules decreases
7 - The rectified spirit is
95% alcohol
8 - Benzene is a good solvent for
all the above
9 - Which of the following solids show anisotropy
None of the above
10 - Which of the following element doesnot show allotropy
Nitrogen
11 - Butyl chloride gives possible isomers.
4
12 - Purines and pyrimidines are
Nitrogenous bases
13 - Metallic crystals are soluble in
Fused metal
14 - All the transition elements show
Both a and b
15 - Paramagnetic behaviour of substance is measured by a balance called
Guoys balance
16 - In solids the temperature is the measure of
Vibrational kinetic energy
17 - Which of the following properties prove that cathode rays are material in nature
they possess momentum
18 - Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal?
aluminium is resistant to corrosion by organic acids.
19 - When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is
33 nm
20 - On heating aldehydes with Fehlings solution we get a precipitate whose colour is
brick red
21 - When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained.
3
22 - Which statement is consistent with Hunds rule.
Electrons fill orbitals with parallel spins until all the orbitals of the same energy are half filled then they go into sub-shells with anti-parallel (opposite) spin.
23 - What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3
2
24 - Atomic number of Mn is 25 what is the electronic configuration in the ground state
1s2 2s2 2p6 3s2 3p6 4s23d5
25 - Which of the following statement is correct
size of Na+ ion < Na atom
26 - Which of the following is mineral fibre.
asbestos
27 - Which catalyst is used in contact process?
V2O5
28 - The hardest of the following solids is
diamond
29 - Which of the following elements has greater 1st ionization energy
"N"
30 - Which of the solid does not contain covalent bond
copper
31 - Which of the following molecule is polar
none of the above
32 - Which of the following theories is superior to others
MOT
33 - Which of the following is not characteristics of reversible reaction
a catalyst changes the direction of reaction
34 - Which of the following points are important in connection with equilibrium constant.
All of the above
35 - A solution has pH = 0 its H+ ion concentration is
1
36 - Solubility of CaF2 is 2.0x10-4 gdm-3 then Ksp of CaF2 is
2 x 10-11
37 - 1 mole of electron has mass in microgram
5 x 10-4
38 - The unit of molality is
moles kg-1
39 - The use of antifreeze in the automobile radiator is an important application of
colligative property
40 - A solution can be both
dilute and concentrated
41 - In which of the following type of reactions energy of reactant is greater than energy of product
exothermic
42 - Which of the following elements react with steam to produce H2 gas.
All of the above
43 - The unit of the rate constant (k) is same as that of rate of reaction
Zero order reaction
44 - Which of the elements do not fall in stair case of the modern periodic table
None of the above
45 - Acid present in acid rain may be
both a and b
46 - Across short period the melting and boiling point increase upto
IVA group
47 - Which of the following elements conduct electricity and also melts below 100Degree Centigrade
Sodium
48 - Which of the following is the formula of chrome red.
Pb3 O4
49 - The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is
Ethylene bromide
50 - Regular coiling or zigzagging of polypeptide through hydrogen bonding is its
Secondary structure
51 - The soul of chemistry is dealing with___________?
Composition and properties of matter
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