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Class 9 - Science मॉक टेस्ट

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नमूना प्रश्न

Class 8 Science
When iron nails are placed in copper sulphate solution for a few minutes, the blue colour of the solution changes to:
A Green
B Red
C Yellow
D Colourless
Class 8 Science
Which type of plastic can be remelted and reshaped multiple times?
A Thermosetting plastic
B Thermoplastic
C Bakelite
D Melamine
Class 9 Science
Which of the following is a source of air pollution?
A Hydroelectric power plant
B Biofuel stove
C Vehicles with internal combustion engines
D Solar panels
Class 9 Science
Which of the following is a characteristic of animal muscle tissue?
A Cells are tightly packed with no intercellular space
B Cells are cylindrical, branched and uninucleate
C Cells show rhythmic contraction and relaxation
D Cells transport food and water
Class 9 Science
A sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. The speed of sound is:
A 340 m/s
B 34 m/s
C 500 m/s
D 680 m/s
Class 8 Science
Which of the following is a displacement reaction?
A NaCl + H₂O → NaOH + HCl
B Zn + CuSO₄ → ZnSO₄ + Cu
C 2Mg + O₂ → 2MgO
D CaCO₃ → CaO + CO₂
Class 10 Science
An organic compound burns with a sooty flame. It decolorizes bromine water. The compound is most likely:
A Methane
B Ethane
C Ethene
D Ethanol
Class 6 Science
A shadow is formed when: a) Light passes through an object b) Light is blocked by an opaque object c) Light bends around an object d) An object reflects light
A Light passes through an object
B Light is blocked by an opaque object
C Light bends around an object
D An object reflects light

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