SAT Chemistry

Exam Duration: 120 Mins Total Questions : 100

1 )

Coke is a fuel and oxygen is a supporter of combustion. When coke burns in sufficient oxygen CO₂ is formed and one of the major use of CO₂ is as fire extinguisher.
Based on this data identify the wrong statement among the following.

(a)
CO₂ is the compound formed by the chemical combination of carbon and oxygen in the ratio of 3:8
(b)
carbon dioxide retains the properties of carbon and oxgyen
(c)
Formation of CO₂is an exothermic process
(d)
The changes occured in this process are permanent

2 )

The components of petroleum )iill be separated by

(a)
Steam distillation
(b)
Fractional distillation
(c)
Simple distillation
(d)
Chromatography

3 )

Mark the correct statement

(a)
Burning of paper does not produce any newsustance.
(b)
Respiration is a chemical change.
(c)
The fizz that comes out when a soda bottle is opened is due to a chemical change
(d)
Crystallisation is a chemical change

4 )

Structures of nuclei of three atoms X, Y and Z are given below.
X has 18 electrons and 22 neutrons
Y has 20 protons and 20 neutrons
Z has 19 protons and 20 neutrons
Based on the above data which of the following statement is correct?

(a)
X and Yare isotopes, Y and Z are isobars
(b)
X and Yare isobars, Y and Z are isotopes
(c)
X and Y are isobars, Y and Z are isotones
(d)
None of the above

5 )

The number of protons in Ca²⁺ ion are

(a)
18
(b)
20
(c)
22
(d)
21

6 )

Which of the following statements are not correct about the liquids?
i. They have fixed volume but no fixed shape.
ii. They are rigid
iii. Thermal expansion is very high
iv. They are fluids

(a)
i,iv
(b)
i.ii
(c)
ii, iii
(d)
i, ii and iii

7 )

Rate of evaporation

(a)
increases with humidity and temperature
(b)
decreases with temperature, but increases with humidity
(c)
decreases with wind speed but increases with humidity
(d)
increases with temperature, but decreases with humidity

8 )

Number of electrons in \(\alpha \) particles are

(a)
4
(b)
1
(c)
2
(d)
0

9 )

The unipositive ion of an element contains 8 electrons in its M shell. If its nucleus contains 20 neutrons what is the mass number of the element?

(a)
18
(b)
19
(c)
38
(d)
39

10 )

Number of electrons present in protium and deuterium are respectively

(a)
1 and 1
(b)
0 and 1
(c)
1 and 0
(d)
1 and 2

11 )

80 g of NaOH is dissolved in 1 litre of water. The molarity of NaOH solution is

(a)
0.1 M
(b)
0.2 M
(c)
1 M
(d)
2 M

12 )

The electronic configuration of Y is 2, 8. If a metal X belongs to 2nd group of the periodic table react swith the element Y the formula of the compound formed would be

(a)
XY
(b)
XY₂
(c)
X₂Y
(d)
None of these

13 )

Which of the following is not a purification method?

(a)
Electrolytic process
(b)
Froth floatation
(c)
Oxidation

14 )

The suitable method to prevent corrosion of iron containers which are used to preserve edible food materials like meat and vegetables is

(a)
Galvanization
(b)
Tinning
(c)
Painting
(d)
All the above

15 )

A metal [P] having one electron in M shell reacts with cold water to form a compound [Q] and a combustible gas [R] which catches fire immediately. The aqueous solution of [Q] on reacting with dilute sulphuric acid gives a salt [S] which gives a solution of pH = 7. The
compound [Pl, [Q] and [S] are respectively

(a)
K, KOH, K₂SO₄
(b)
Li, LiOH, Li₂SO₄
(c)
Na, NaOH, Na₂SO₄
(d)
Na, NaOH, Na₂SO₃

16 )

Arrange the following compounds in increasing order of pH values.
i) Human blood
ii) 1 M HCl
iii) 1 M NaOH
iv) Lemon juice
v) Soft drinks

(a)
ii< iv < v < i < iii
(b)
iii < i < v < iv < ii
(c)
ii < v < iv < i < iii
(d)
ii < i < v < iv < iii

17 )

Which of the following has the smallest size

(a)
Na
(b)
K
(c)
Rb
(d)
Na⁺

18 )

Identify the organic acids among the following.
i) Tartaric acid
ii) Hydrobromic acid
iii) Oxalic acid
iv) Citric acid

(a)
(i) and (iii)
(b)
(i) and (iv)
(c)
(i) , (iii) and (iv)
(d)
(i), (ii). (iii) and (iv)

19 )

Identify the weak base among the following

(a)
KOH
(b)
NaOH
(c)
Cs(OH)
(d)
Ca(OH)₂

20 )

Metal kept in paraffin wax is ______________.

(a)
Na
(b)
K
(c)
Li
(d)
P

21 )

The number of single bonds and double bonds present in 2 - methyl-1-butene are

(a)
12 and 1
(b)
10 and 1
(c)
13 and 1
(d)
14 and 1

22 )

IUPAC name of isopentane is

(a)
2-methyl pentane
(b)
3-methyl pentantane
(c)
2-methyl butane
(d)
3-methyl butane

23 )

The number of covalent bonds in chloropropane is

(a)
7
(b)
8
(c)
9
(d)
10

24 )

pH of ethanoic acid is _________ that of hydrochloric acid

(a)
greater than
(b)
less than
(c)
equal to
(d)
cannot be predicted

25 )

Mixing of gases is called___________

(a)
diffusion
(b)
effusion
(c)
filtration
(d)
sedimentation

26 )

For any substance the temperature remains same during the change of state due to_____________

(a)
loss of heat
(b)
latent heat
(c)
less supply of heat
(d)
lattice energy

27 )

Choose the correct statement of the following:

(a)
conversion of solid into vapours without passing through the liquid state is called vaporisation
(b)
conversion of vapours into solid without passing through the liquid state is called sublimation.
(c)
(c) conversion of vapours into solid without passing through the liquid state is called freezing.
(d)
conversion of solid into liquid is called sublimation.

28 )

Which of the following changes represent sublimation?

(a)
solid ⇔ liquid
(b)
solid ⇔ gas
(c)
liquid ⇔ gas
(d)
gas ⇔ liquid ⇔ gas

29 )

When litmus is added to a solution of borax, it turns ______________

(a)
red
(b)
pink
(c)
remains colourless
(d)
blue

30 )

Choose the acid salt from the following:

(a)
NaNO₃
(b)
Na₂SO₄
(c)
NaHSO₄
(d)
Na₂CO₃

31 )

Cathode rays are deflected towards ____________

(a)
positive electrode
(b)
negative electrode
(c)
both electrodes
(d)
none of the electrodes

32 )

Which one of the following elements exhibits maximum number of valence electrons?

(a)
Na
(b)
Al
(c)
Si
(d)
P

33 )

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group?

(a)
A and B
(b)
B and D
(c)
A and C
(d)
D and E

34 )

The family of elements having seven electrons in the outermost shell is ____________

(a)
alkali metals
(b)
alkaline earth metals
(c)
halogens
(d)
noble gases

35 )

A purple coloured solid halogen is ___________

(a)
chlorine
(b)
bromine
(c)
iodine
(d)
astatine

36 )

Hydration means

(a)
Addition of hydrogen
(b)
Addition of hydrogen chloride
(c)
Addition of sulphuric acid
(d)
Addition of water

37 )

A hydrocarbon compound burns with a non-luminous flame. Which hydrocarbon type does it indicate?

(a)
Alicyclic hydrocarbon
(b)
Aromatic hydrocarbon
(c)
Unsaturated hydrocarbon
(d)
Unsaturated hydrocarbon

38 )

The property of metal by which it can be drawn into wires is called:

(a)
Conductivity
(b)
Malleability
(c)
Ductility
(d)
Decorating

39 )

Solids cannot be compressed because

(a)
constituent particles are very closely packed
(b)
inter-particle attractive forces are weak.
(c)
movement of constituent particles is restricted
(d)
constituent particles diffuse very slowly.

40 )

Many element have non - integral masses because

(a)
they have isobars
(b)
their isotopes have non - integral masses.
(c)
they have isotopes.
(d)
the constituents neutrons, protons & electrons combine to give fractional masses.

41 )

The first scientist to use the symbols of elements was

(a)
Dalton
(b)
Berzilius
(c)
Kanad
(d)
Proust

42 )

Which of the following is the formula of nitrate ion

(a)
N₃^-
(b)
NO₃^-
(c)
NO⁺
(d)
NO₂⁺

43 )

6.023 x 10²⁰ atoms of silver (Atomic mass = 108 u) weight

(a)
108 x 10³g
(b)
108 g
(c)
0.108g
(d)
10.8g

44 )

Which of the following has largest number of molecules?

(a)
8 g of CH₄
(b)
4.4 g of CO₂
(c)
34.2 g of C₁₂H₂₂O₁₁
(d)
2 g of H₂

45 )

Which of the following equations is not an example of single displacement reaction?

(a)
2AI + Fe₂O₃ ⟶ Al₂O₃ + 23Fe
(b)
Ca + CO₂ ⟶ CaCI₂
(c)
2KI + Cl₂ ⟶ 2KCI + 1₂
(d)
2Na + 2H₂O ⟶ 2NaOH + H₂

46 )

Which of the following statements is/are false for oxidation reaction?

(a)
Gain or addition of electronegative radical
(b)
Removal of hydrogen atom.
(c)
Removal or loss of electropositive radical or element
(d)
None of these

47 )

The chemical name of marble is

(a)
calcium carbonate
(b)
Magnesium carbonate
(c)
calcium chloride
(d)
calcium sulphate

48 )

Modern periodic law was proposed by

(a)
Mendeleev
(b)
Henry Mosley
(c)
Werner
(d)
Bohr and Bury

49 )

On addition of which metal, copper sulphate solution (Blue colour) will be changed to colourless solution

(a)
Fe
(b)
Ag
(c)
Zn
(d)
Hg

50 )

Covalent compounds are

(a)
good conductors of electricity
(b)
bad conductors of electricity
(c)
semiconductors of electricity
(d)
none of these

51 )

Process of roasting and calcination takes place in

(a)
bessemer converter
(b)
blast furnace
(c)
reverberatory furnace
(d)
electrolytic cell

52 )

In thermite process reducing agent is

(a)
C
(b)
Cl
(c)
Al
(d)
None of these

53 )

A metal which is liquid at room temperature is:

(a)
Hg
(b)
Na
(c)
K
(d)
Al

54 )

Element which is present in native state is

(a)
Iron
(b)
Calcium
(c)
Copper
(d)
Platinum

55 )

Fullerenes are a cluster of ___________ atom held in a cage like structure

(a)
Carbon
(b)
Silicon
(c)
Oxygen
(d)
Hydrogen

56 )

On heating copper sulphate crystals, the blue colour of the crystals turn

(a)
Red
(b)
Yellow
(c)
White
(d)
Purple

57 )

The layer which reflects radio signals back to earth is

(a)
Ozone layer
(b)
Troposphere
(c)
Ionosphere
(d)
Stratosphere

58 )

At sea level, atmospheric pressure is equal to the weight of a mass acting on every square centimeter

(a)
1 gm
(b)
10 kg
(c)
1 kg
(d)
10 gm

59 )

When air is cooled, CO₂ separates as dry ice at

(a)
-78°C
(b)
78°C
(c)
0°C
(d)
-8°C

60 )

Oxygen reacts with non-metal to form

(a)
Acidic oxide
(b)
Basic oxide
(c)
Amphoteric oxide
(d)
None

61 )

Depletion of ozone layer takes place due to

(a)
Methyl alcohol
(b)
Carbon tetrachloride
(c)
Benzene
(d)
Chlorofluorocarbon

62 )

_______ gas is used to fill electric bulb at low pressure:

(a)
O₂
(b)
H₂
(c)
Ar
(d)
N₂

63 )

Brass is an alloy of:

(a)
Cu, Sn
(b)
Cu, Zn
(c)
Cu, Al
(d)
Sn, Pb

64 )

Ca⁺² ion has ........ number of electrons

(a)
20
(b)
18
(c)
22
(d)
16

65 )

A chemical bond formed by sharing of electron is called

(a)
Ionic bond
(b)
Covalent bond
(c)
co-ordinate bond
(d)
Hydrogen bond

66 )

Haematite is an ore of:

(a)
Zn
(b)
Fe
(c)
Cu
(d)
Al

67 )

Methane is used as fuel because

(a)
It produces large amount of heat on burning
(b)
It is gas at room temperature
(c)
It is lighter than air
(d)
It is colourless

68 )

LPG contains

(a)
Butane, isobutane
(b)
Butane
(c)
Butyne
(d)
None of these

69 )

An aqueous solution of the salt is acidic in nature. Which of the following acids and bases react to give this salt?

(a)
Strong acid and weak base
(b)
Strong acid and strong base
(c)
Weak acid and weak base
(d)
Weak acid and strong base

70 )

Which one of the following types of medicines is used for treating indigestion?

(a)
Antibiotic.
(b)
Analgesic
(c)
Antacid
(d)
Antiseptic

71 )

The chemical formula of Plaster of Paris is

(a)
CaSO₄·2H₂O
(b)
CaSO₄·1/2H₂O
(c)
(CaSO₄)₂·3H₂O
(d)
CaSO₄·H₂O

72 )

Which of the following properties of the atoms of an element 'X' and its ions X²⁺ must be the same?

(a)
Size
(b)
Colour
(c)
Nuclear charge
(d)
Ionization energy

73 )

An atom with atomic number 21 belongs to

(a)
s-block elements
(b)
p-block elements
(c)
d-block elements
(d)
f-block elements

74 )

Metals and hydrogen are always

(a)
electropositive
(b)
electronegative
(c)
both
(d)
none of the above

75 )

The number of nonmetallic elements which are liquids at room temperature is

(a)
2
(b)
1
(c)
4
(d)
3

76 )

Out of Na, Mg, Mg⁺ and Mg⁺², the highest ionisation energy is of

(a)
Mg⁺
(b)
Na
(c)
Mg⁺²
(d)
Mg

77 )

Which atoms have undergone a change in the oxidation number in the reaction 2KCIO₃ \(\longrightarrow\) 2KCl + 3O₂?

(a)
K and Cl
(b)
K and O
(c)
Cl and O
(d)
K, Cl, and O.

78 )

The particles present in the nucleus of an atom are

(a)
Proton and electron
(b)
electron and neutron
(c)
Proton and neutron
(d)
None of the these

79 )

Corrosion of metal can be prevented when contact between metal and ... is cut off.

(a)
N₂
(b)
H₂
(c)
O₂
(d)
Carbon

80 )

Which of the following are isoelectronic with one another?

(a)
Na⁺ and Ne
(b)
K⁺ and O
(c)
Ne and O
(d)
Na⁺ and K⁺

81 )

Particles containing 17protons and 18 electrons, 18 electrons and 16protons 15 protons and 18 electrons would be described as

(a)
isotopes
(b)
isobars
(c)
anions
(d)
cations

82 )

An atom which has gained one electron will be a

(a)
monopositive ion.
(b)
dipositive ion
(c)
neutral atom.
(d)
negatively charged ion

83 )

In which molecule the bond angle is maximum

(a)
CH₄
(b)
H₂O
(c)
H₂S
(d)
CO₂

84 )

The relative atomic mass of naturally occurring chlorine is not a whole for this is that

(a)
chlorine is radioactive
(b)
the mass of electrons has been included.
(c)
the chlorine atom has an incomplete shell of electrons
(d)
chlorine is made up of more than one type of atoms

85 )

In the reaction, 2 Na + Cl \(\longrightarrow\) 2 NaCl,

(a)
Na has been oxidized while Cl₂ has been reduced
(b)
Na has been reduced while Cl₂ has been oxidized
(c)
No substance has been oxidized or reduced as it is not a redox reaction
(d)
NaCl cannot be obtained by this reaction.

86 )

Most favourable conditions for electrovalent bonding are

(a)
low ionisation potential of one atom and high electron affinity of the other atom
(b)
high electron affinity and high ionisation potential of both the atoms
(c)
low electron affinity and low ionisation potential of both the atoms
(d)
high ionisation potential of one atom and low electron affinity of the other atom.

87 )

Rusting of iron can be prevented by

(a)
Applying grease or oil on iron surface
(b)
By galvanization
(c)
By electroplating iron by less reactive metal
(d)
Any of these

88 )

The types of bonds present in NH₄Cl are:

(a)
electrovalent, covalent and coordinate
(b)
only ionic
(c)
only covalent
(d)
covalent and coordinate

89 )

Coordinate linkage is formed

(a)
by transfer of one electron from one atom to another
(b)
by the loss of one electron each from both the atoms
(c)
by sharing of one electron from each atom
(d)
when contribution of one electron pair is made by one atom and both the atoms share equally

90 )

The number of σ and π-bonds in I-butene-3-yne are:

(a)
5 sigma and 5 pi
(b)
7 sigma and 3 pi
(c)
8 sigma and 2 pi
(d)
6 sigma and 4 pi

91 )

Which of the following represents a disproportiona tion reaction?

(a)
Cl₂+ 2 OH^- \(\longrightarrow\) CIO^- + Cl^- + H₂O
(b)
Cu₂O + H+ \(\longrightarrow\) Cu + Cu²⁺ + OH^-
(c)
2 HCuCl₂ \(\underset { \overset { \xrightarrow{} }{with\ H\ \ O } }{ dilution} \) Cu + Cu²⁺ + 4Cl + 2 H⁺
(d)
All the three above.