Mathematics Objective Question for Class– IX

Class – IX

General Mathematics

Time : 25 minutes.                                                                                                                          Full Marks – 25

1.         Co-efficient of linear expansion of iron us

            a)  33.6 x 10 -6 K -1    b)  11 x 10 -6 K -1

            c)  27 x 10 -6 K.          d)  55 x 10 -6 K -1

2.         Unit of X, B, & is.

            a)  C -1                        b)  S -1

            c)  K -1                        d)  F -1

3.         The value of B depends on.

            a)  Quantity of solid.

            b)  Quality of solid.

            c)  Temperature of solid

            d)  Material of the solid.

4.         KPepin's digester was invente C in.

            a)  1661 AD                b)  1671 A.D

            c)  1681 A.d                d)  1691 A.D.

5.         Calorim eter was invented by Scientist .

            a)  Kelvin                    b)  Regnoult

            c)  Jouli                        d)  Valta.

6.         Heal capacity does not depends on

            a)  Amount of heat      b)  Mass

            c)  Material                  d)  Temperature

7.         Specific heat of a earth is

            a)  910 Jkg ^-1 K^-1          b)  900 Jkg^-1 K^-1

            c)  2350 JKg K -1       d)  800 Jkg ^-1 K ^-1

8.         What is the efficiency of a petrol engine ?

            a)  Nearly 20%            b)  Nearly 30%

            c)  Nearly 35%            d)  Nearly 25%

9.    The sensation of sound persists in our brain for.

            a)  0.1 sec                    b)  1 Sec

            c)  16.6 Sec                 d)  1.1 Sec

10.       What is the speed of sand in the moon ?

            a)  332 m/s                   b)  3 x105 km/sec

            c)  O                            d)  3 x 1010 m/s

11.       The speed of sound in water is

            a)  522 1 m/s                b) 332 m/s

            c) O                             d) 1450 m/s

12.       The range of upper limit of andibility of spider is?

            a) 1,00000                   b) 20000H₃

            c) 20H₃                        d) 45,000H₃

13.   The amount of ice block remains above the water?

            a)  part                    b)  part

            c) part                      d) O Part

14.       Density of water in MKS process in.

            a) 1 kg/m³                    b) 1000 kg/m³

            c) 10 kg/m³                    d) 100 kg/m³

15.       Who invented hydraulics press?

            a) Barnouli                  b) Otto

            c) Bramah                    d) Ven

16.       The pressure of the liquid increases with

            a) Mass                        b) Area

            c) Force                       d) Depth

17.       How many forcer act on a body when it is immersed in a liquid?

            a) 1 forces                   b) 2 forces

            c) 3 forces                   d) 4 forces

18.       The density of a body is how many times greater than its specific gravity in S.I unit?

            a) 10 times                   b) 100 times

            c) 1000 times               d) 10000 times

19. What is specific gravity of mercury?

            a) 13                            b) 19.3

            c) 13.6                         d) 16.3

20.       1 H.P = ?

            a) 1 J/S                        b) 746 J/S

            c) 3.6 J/S                     c) 7.46 J/S

21.       Form which we get electric energy from chemical energy?

            a) Dynamo                  b) Ballevy

            c) Electric                    d) motor         

22.       1 MW = ?

            a) 10⁵                           b) 10⁶

            c) 10⁷                           d) 10⁴

23.       1 Calorie = ?

            a) 2.4 J                         b) 4.2 J

            c) 4.1 J                         d) 0.24 J

24.       What is the standard value of g ?      

            a) 9.78039 m/s²           b) 9.18 m/s²

            c) 9.80665 m/s²           d) 9.78918 m/s²

25.       The scale of spring balance is graduated in /

            a) Joule                        b) Newton

            c) Kg                           d) Metre