NTSE SAT Chemistry Papers 02

NTSE SAT Chemistry Papers 02

This is NTSE SAT Chemistry Papers 02 .. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The bond, in compound formed from combination of 14 group and 17 group elements of Periodic table will be
  • A
    Vander Waals bond
  • B
    Covalent bond
    Correct
  • C
    Co-ordinate bond
  • D
    Electrovalent bond
2
Which of the following is thermo-resistant polymer?
  • A
    Orlon
  • B
    Polythene
  • C
    Teflon
    Correct
  • D
    Bakelite
3
Aluminium ore is
  • A
    Dolomite
  • B
    Bauxite
    Correct
  • C
    Haematite
  • D
    Calamine
4
When Sodium carbonate \(\left( {N{a_2}C{O_3}} \right)\)reacts with Silica \(\left( {Si{O_2}} \right)\)gives
  • A
    Crook
  • B
    Soda glass
  • C
    Water glass
    Correct
  • D
    Pyrex glass
5
In Haber process of Ammonia production, the element used as catalytic promotor to increase the activity of Iron catalyst is
  • A
    W (Tungston)
  • B
    V (Vanadium)
  • C
    Mo (Molybednum)
    Correct
  • D
    Ni (Nickel)
6
In order to decrease the role of setting of Cement, which compound is mixed in it?
  • A
    \(Ca{(OH)_2}\)(Slaked lime)
  • B
    \(CaC{O_3}\)(Calcium Carbonate)
  • C
    \(CaS{O_4}.2{H_2}O\)(Gypsum)
    Correct
  • D
    \(A{l_2}{O_3}\)(Alumina)
7
Which element forms maximum multiple bonds?
  • A
    Bi
  • B
    P
  • C
    N
    Correct
  • D
    As
8
\({P^H}\)of \({10^{ - 6}}KOH\)solution is:
  • A
    6
  • B
    8
    Correct
  • C
    0.6
  • D
    0.8
9
An example of the condensation method for the preparation of a colloid is:
  • A
    Hydrolysis
    Correct
  • B
    Mechanical disintegration
  • C
    Electrical dispersion
  • D
    Peptization
10
The ‘d’ block elements in the Periodic Table form alloys among themselves because:
  • A
    Their ionization potentials are similar
  • B
    They have unpaired electrons
  • C
    They are all metals
  • D
    Their atomic sizes are nearly the same
    Correct
11
In alkaline medium \({H_2}{O_2}\)reacts with \(F{e^{3 + }}\)and \(M{n^{2 + }}\) separately to give
  • A
    \(F{e^{3 + }}\)and \(M{n^{2 + }}\)
  • B
    \(F{e^{2 + }}\)and \(M{n^{4 + }}\)
  • C
    \(F{e^{3 + }}\)and \(M{n^{4 + }}\)
    Correct
  • D
    \(F{e^{2 + }}\)and \(M{n^{2 + }}\)
12
Acetic acid may be prepared by the:
  • A
    Polymerization of ethylene
  • B
    Destructive distillation of soft coal
  • C
    Reduction of acetone
  • D
    Oxidation of ethanol
    Correct
13
Which of the following statements is false about a soap?
  • A
    Soap cannot be used in slightly acidic medium
  • B
    Soap forms lather only in soft water
  • C
    Soap is a metallic salt of higher fatty acids
  • D
    The soap solution in water is neutral and can be used to wash all kinds of fabrics
    Correct
14
Identify the final product Z in the series of chemical reactions. \(C{H_3}CN\overset{{Na/{C_2}{H_5}OH}}{\longrightarrow}X\overset{{HN{O_3}}}{\longrightarrow}Y\overset{{CU/573K}}{\longrightarrow}Z\)
  • A
    \(C{H_3}C{H_2}NHOH\)
  • B
    \(C{H_3}COOH\)
  • C
    \(C{H_3}CON{H_2}\)
  • D
    \(C{H_3}CHO\)
    Correct
15
One of the constituents in Portland Cement is Iron Oxide \(\left( {F{e_2}{O_3}} \right)\). Its function is:
  • A
    To impart characteristic grey colour strength and hardness to the cement
    Correct
  • B
    To make the cement high quality
  • C
    To increase the strength and reduce the setting time
  • D
    To impart soundness to cement when present in small amount