ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Colour of PCl5is: Red Yellowish White Grey Colourless
2 The most stable phosphorus allotrope is White Red Black All
3 Which is the most reactive? White phosphorus Red Phosphorus Graphite Plastic sulphur
4 Structure of P4 is Trigonal Tetragonal Hexagonal Monoclinic
5 Allotropic forms of phosphorus are three four five six
6 Bone ash contains calcium phosphate 70% 80% 90% 100%
7 Posphorus belongs to a group III-A IV-A V-A VI-A
8 Specific gravity of HNO3 is 1.35 1.53 1.39 1.93
9 Colour of N2O4 is Raddish brown Yellow Colouries green
10 Ring testis given by ions. Nitrides Nitrates Cyanates Nitriles
11 Which is an inert gas? Nitrogen Oxygen Hydrogen CO
12 Nitrogen is present in atmosphere 36% 78% 89% 21%
13 Nitrogen is present in atmosphere 21% 36% 89% 78%
14 Which element of group IV-A does not use d-orbital? N P As Sb
15 Which property is not present in non-metals: Predominantly covalent Poor conductor High E.N. Value High electropositivity
16 Calcium carbonates contains oxygen in it: 48% 50% 53% 60%
17 Nitrogen is present in atmosphere by weight: 75% 76% 77% 78%
18 Aqua Regia has ration of conc. HCl and HNO3. 1 : 2 1 : 3 1 : 4 2 : 3
19 NO2forms acidic solution: Red Blue Green Brown
20 Tungsten and Uranium are turned to an reaction with HNO3: Oxides chlorides Nitrides Nitrates
21 SO2is not absorbed in water directly to or H2SO4because: The reaction does not go to completion the reaction is quite slow the reaction is exothemic SO<sub>3</sub>is insolublein water
22 Out of all the elements of group VI-A the highest melting and boiling points is shown by the elements: Te Se S Pb
23 Among group V-A elements, the most electronegative element is: Sb N P As
24 Out of all the elements of group V-A , the highest ionization energy is possessed by: N P Sb Bi
25 alkaline metal have electrons in s-orbitals: One Two three Four
26 Alkali metals have electrons in s-orbital: one two three Four
27 The strong alkaline solution in water is of metal: Potassium Sodium Lithium Magnesium
28 Which one is alkaline earth metal? Sodium Beryllium Potassium Lithium
29 Which one is alkali metal in them? Rubidium Magnesium Calcium Barium
30 Arabic word "alkali" means: The ashes the sour The fragrant Caustic
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