Class 9
Question paper of Science
Section A
Choose the correct option
Q1 When the vibration object moves backwards ,it creates a region of lowpressure
Called
a. Refraction b. Reflection c. Rarefaction d. Retardation
Q2 The phenomenon where a sound produced is heart again due to reflection is called
a. Interference b. Sound bounce c. Mirage d. An echo
Q3 Sound waves in air is an example of—
a. Longitudinal b. Transverse c. Electromagnetic d. None of these
Q4 The distance which compression or a rarefaction travels per unit time gives-
a. Density b. Speed c. Wavelength d. Frequency
Q5 Sound travels through which medium-
a. Solid b. Liquid c. Gas d. All of these
Q6 The frequency of a sound wave determines its-
a. Loudness b. Speed c. Wavelength d. Pitch
Q7 Which of the following is the correct paor-
a. Sulphur - Su b. Phosphorus - p c. Potassium– P d. Sodium– S
Q8 The formula of ammoniumsulphate is –
a. NH4SO4 b.NH4SO2 c. NH2SO4 d.NH2SO4
Q9 howmany electrons are occupied in the M-Shell
a. 18 b. 8 c. 16 d. 32
Q10 Whodiscovered the proton?
a. JJ Thomson b. E. Goldstein c. Chadwick d. Rutherford
Question paper of Science
Section A
Choose the correct option
Q1 When the vibration object moves backwards ,it creates a region of lowpressure
Called
a. Refraction b. Reflection c. Rarefaction d. Retardation
Q2 The phenomenon where a sound produced is heart again due to reflection is called
a. Interference b. Sound bounce c. Mirage d. An echo
Q3 Sound waves in air is an example of—
a. Longitudinal b. Transverse c. Electromagnetic d. None of these
Q4 The distance which compression or a rarefaction travels per unit time gives-
a. Density b. Speed c. Wavelength d. Frequency
Q5 Sound travels through which medium-
a. Solid b. Liquid c. Gas d. All of these
Q6 The frequency of a sound wave determines its-
a. Loudness b. Speed c. Wavelength d. Pitch
Q7 Which of the following is the correct paor-
a. Sulphur - Su b. Phosphorus - p c. Potassium– P d. Sodium– S
Q8 The formula of ammoniumsulphate is –
a. NH4SO4 b.NH4SO2 c. NH2SO4 d.NH2SO4
Q9 howmany electrons are occupied in the M-Shell
a. 18 b. 8 c. 16 d. 32
Q10 Whodiscovered the proton?
a. JJ Thomson b. E. Goldstein c. Chadwick d. Rutherford
