SSC Chemistry ( Objective Type) Model Question, No-04

Class – X

Subject : Chemistry ( Objective Type)

Time : 35 Minutes.                                                                                                                                Marks. 35

1.         Which one is a compound?

            a)  oxygen gas              b)  Sugar

            c)  Gold                        d)  Nitrogen gas

2.         Which one of the following is an element?

            a)  Water                      b)  Hydrogen

            c)  common salt            d)  Sugar

3.         What is the mass of one molecule of water?

            a)  18 g                        b)  2.99 x 10^-23

            c)  6.023x10^-23             d)  18

4.         What is the molecular mass of H₂ SO₄?

            a)  98 g                        b)  88 g

            c)  98                           d)  44

5.         How many molecules in 44 g CO₂ gas?

            a)  1.66x10²³                b)  6.023x10^-23

            c)  6.66x 10 ²³              d)  6.023 x10²³

6.         Which one is not radical?

            a)  HCo₃                      b)  CO₃

            c)  CO₂                                    d)  SO₄

7.         What is the valency of bicarbonate radical?

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

8.         How many neutrons are in Na+ ?

            a)  10      b)  11    c)  12        d)  13

9.         How many protons are in Al³⁺ ion?

            a)   10     b)  11           c)  12      d)  13

10.       Glycerin is -

            a)  Alcohol       b)  Ether

            c)  Ester           d)  Acid

11.       Which one is the functional group of ether?

            a)  -COOR      b)  -COOH

            c)  -C=C-        d)  -C -O-C-

12.       Which element is necessarily present in every organic compound?

            a)  Hydrogen                b)  Oxygen

            c)  Carbon                    d)  Nitrogen

13.       If ammonium nitrate is heated, the principal product is -

            a)  N₂O                        b)  NO₂

            c)  NO                         d)  N₂O₅

14.       Which acid is dehydrating agent?

            a)  HNO₃                     b)  HCl

            c)  H₃ PO₄                    d)  H₂SO₄

15.       Which metal shows brick red colour in the flame test?

            a)  Calcium                   b)  Sodium

            c)  Potassium                d)  Lithium

16.       Which chemical formula is correct?

            a)  Ca₂ CO₃                 b)  Na₂ S₂O₃

            c)  AlCl4                      d)  CuCl₃

17.       Which one is the formula of haematite?

            a)  Fe2 O₃. 3H₂O         b)  Fe₂ O₃. 2H₂O

            c)  Fe₂ O₃. H₂O            d)  Fe₂ O₃

18.       Which metal can hot be extracted by carbon reduction process?

            a)  Iron                         b)  Copper

            c)  Aluminium   d)  Sine

19.       One calorie equals how many joule?

            a)  1.48            b)  2.18

            c)  3.18            d)  4.18

20.       How many Faradays (F) of current is required to deposit 1 mole of Nickel?

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

21.       Chemical equilibrium is -

            a)  One way                 b)  Static

            c)  Dynamic                  d)  None

22.       Which one is oxidation?

            a)  Loss of electron       b)  Loss of oxygen

            c)  Gain of electron       d)  Loss of chlorine

23.       Which one of the following is oxidizing agent?

            a)  Fe ³⁺           b)  Zn ²⁺

            c)  Fe ²⁺           d)  Cu⁺

24.       Which one is amphoteric oxide?

            a)  Li₂ O                       b)  ZnO

            c)  Na₂O                      d)  MgO

25.       The position of phosphorous in the periodic table is in -

            a)  group IIA                b)  IIIA

            c)  IV A                       d)  V A

26.       What is the atomic number of Arsenic?

            a)  23       b)    33         c)   43       d)   53

27.       What is the shape of the ammonia molecule?

            a)  Pyramidal                b)  Tetrahedral

            c)  Angular                   d)  Linear.

28.       Which one of the following is covalent compound?

            a)  MgO                       b)  NaCl

            c)  MgCl₂                     d)  H₂O

29.       How many lone pair electrons are there in ammonia?

            a)  1      b)   2      c)      3     d)    0

30.       Which one is basic oxide?

            a)  Na₂O                      b)  H₂O

            c)  CO₂                        d)  SO₂

31.       Which is known as laughing gas?

            a)  NO₂                        b)  N₂O₅

            c)  N₂O                        d)  CO

32.       Which gas is highly poisonous?

            a)  CO₂                        b)  NH₃

            c)  SO₂             d)  CO

33.       What is the formula of copper pyrite?

            a)  Cu₂ FeS₂                 b)  CuFeS₂

            c)  Cu₂ FeS₂                 d)  CuFeS

34.       One Farsday is how many coulombs?

            a)  9600                       b)  96000

            c)  96500                     d)  96

35.       CH₃ -CH= CH- CH₃ is -

            a)  4 - butene                b)  3- butence

            c)  1 - butene                d)  2 butene