NTSE SAT Chemistry Papers 04

NTSE SAT Chemistry Papers 04

This is NTSE SAT Chemistry Papers 04 .. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The nature of solution when sodium carbonate is dissolved in water will be
  • A
    Amphoteric
  • B
    Neutral
  • C
    Basic
    Correct
  • D
    Acidic
2
An element A belongs to third period and second group of periodic table. The number of valence electron / electrons of element A is
  • A
    Three
  • B
    Two
    Correct
  • C
    Four
  • D
    One
3
The chemical reaction \({\text{HN}}{{\text{O}}_3}{\text{ + KOH}} \to {\text{KN}}{{\text{O}}_3}{\text{ + }}{{\text{H}}_2}O\)is an example of
  • A
    Double displacement
  • B
    Combination
  • C
    Neutralization and double displacement
    Correct
  • D
    Neutralization
4
pH of a solution is zero. The nature of this solution is
  • A
    basic
  • B
    neutral
  • C
    acidic
    Correct
  • D
    amphoteric
5
the difference in number of crystalline water molecules in a molecule of gypsum and a molecule of plaster of Paris is
  • A
    \(\frac{5}{2}\)
  • B
    2
  • C
    \(\frac{1}{2}\)
  • D
    \(\frac{3}{2}\)
    Correct
6
An alkyne has 4 numbers of hydrogen atoms. What will be the number of carbon
  • A
    Five
  • B
    Two
  • C
    Three
    Correct
  • D
    Four
7
Number of molecules in 14 g of carbon monoxide is
  • A
    \(3.011 \times {10^{23}}\)
    Correct
  • B
    \(1.5050 \times {10^{23}}\)
  • C
    \(12.044 \times {10^{23}}\)
  • D
    \(6.022 \times {10^{23}}\)
8
The boiling point of a gas is \( - 80^\circ C\). This temperature is equivalent to
  • A
    193 K
    Correct
  • B
    -353 K
  • C
    -193 K
  • D
    353 K
9
Which of the following solutions does not show Tyndall effect?
  • A
    Milk
  • B
    Sugar solution
    Correct
  • C
    Starch solution
  • D
    Ink
10
Under the same condition of temperature and pressure, 1 litre of oxygen gas was mixed with 1 litre of carbon dioxide gas. The mass ratio of the gases in the mixture will be
  • A
    It is 11:8
  • B
    It is 16:44
  • C
    It is 8:11
    Correct
  • D
    It is 1:1
11
Which of the following is not the unit of the Universal Gas Constant?
  • A
    \(Pa\;{m^2}mo{l^{ - 1}}{k^{ - 1}}\)
    Correct
  • B
    \(Pa\;{m^3}mo{l^{ - 1}}{k^{ - 1}}\)
  • C
    \(erg\;mo{l^{ - 1}}{k^{ - 1}}\)
  • D
    \(J\;mo{l^{ - 1}}{k^{ - 1}}\)
12
Electric current is passed through a concentrated aqueous solution of sodium chloride by means of a battery. After disconnecting the circuit the solution thus obtained is divided into two equal parts by volume. In one part phenolphthalein and in another part methyl orange indicator was added. The colour of the solutions will be respectively-
  • A
    Colourless and Red
  • B
    Colourless and Yellow
  • C
    Pink and Yellow
  • D
    Pink and Red
    Correct
13
\({n_1}\)molecules of a gas is kept in a container of definite volume at a temperature of \(T^\circ \)and at a pressure P. What will be the pressure of the gas at that temperature when \({n_2}\)molecules of gas is removed from the container?
  • A
    \(\frac{{{n_1}P}}{{({n_1} - {n_2})}}\)
  • B
    \(\frac{{\left( {{n_1} - {n_2}} \right)}}{{{n_2}P}}\)
  • C
    \(\frac{{\left( {{n_1} - {n_2}} \right)P}}{{{n_2}}}\)
  • D
    \(\frac{{\left( {{n_1} - {n_2}} \right)P}}{{{n_1}}}\)
    Correct
14
The ascending order of \(\frac{e}{m}\)(charge / mass) value for electron (e), proton (p), neutron (n) and alpha \(\left( \alpha \right)\)particle is
  • A
    n, p, e, \(\alpha \)
  • B
    n, p, \(\alpha \), e
  • C
    n, \(\alpha \), p, e
    Correct
  • D
    e, p, n, \(\alpha \)
15
Among LiCl, RbCl, \(BeC{l_2}\)and \(MgC{l_2}\)which two are the highest and the lowest ionic compounds?
  • A
    RbCl and \(BeC{l_2}\)
    Correct
  • B
    \(MgC{l_2}\)and \(BeC{l_2}\)
  • C
    RbCl and \(MgC{l_2}\)
  • D
    LiCl and RbCl