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Class 8 - Science मॉक टेस्ट

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नमूना प्रश्न

Class 8 Science
When copper sulphate solution is electrolysed using copper electrodes, what happens at the positive electrode (anode)?
A Copper deposits
B Copper dissolves
C Oxygen gas is released
D Hydrogen gas is released
Class 6 Science
Cuscuta ( Amarbel ) is a parasitic plant that obtains nutrition from its host by:
A Photosynthesizing like a green plant
B Twisting around the host and extracting ready food
C Decaying the host plant
D Absorbing only water from the soil
Class 8 Science
Which microorganism is used in the production of yogurt?
A Saccharomyces cerevisiae
B Lactobacillus
C Penicillium
D Rhizobium
Class 10 Science
When dilute hydrochloric acid is added to zinc granules, which of the following is observed?
A The mixture turns blue
B Hydrogen gas is evolved and zinc chloride is formed
C Zinc dissolves and carbon dioxide is evolved
D A precipitate of zinc chloride is formed
Class 7 Science
In which part of the human digestive system is food finally digested and absorbed?
A Stomach
B Small intestine
C Large intestine
D Food pipe
Class 6 Science
Which of the following forest products helps in preventing soil erosion?
A Timber
B Leaf litter covering the soil
C Medicinal plants
D Tropical woods
Class 10 Science
When a dilute solution of sodium hydroxide is added to zinc powder and gently warmed, a colourless gas is evolved. The gas is:
A chlorine
B hydrogen
C ammonia
D oxygen
Class 7 Science
Which organism breathes through its moist skin?
A Dog
B Fish
C Frog
D Snake

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