Question

Q.(22) Define the process of threshing? (2)

Q.(23) Write four characteristics of an ideal fuel. (2)

Section-C

Q.(24) Give three examples each of situations in which you push or pull to change the state of motion

of objects. (3)

Q.(25) What is Reproduction? Write down how many types of reproduction takes place? (3)

Q.(26) Make a well labelled diagram of Human eye. (3)

Q.(27) What is Metamorphosis? Explain it with a suitable example? (3)

Q.(28) Define the process of electrolysis. (3)

Q.(29) Explain why a charged body loses its charge if we touch it with our hand? (3)

Q.(30) Write down the difference between Eukaryotic and Prokaryotic cell? (3)

Q.(31) Define the law of reflection of light and also show its ray diagram. (3)

Section-D

Q.(32) Match the following: (5)

i. A bacteria i. A Natural Gas.

ii. Larynx ii. Baking of bread.

iii. Leucoplast iii. Causing cholera.

iv. CNG iv. Colourless plastid

v. Yeast v. vocal cords

Or

Differentiate between: (a) Oviparous and Viviparous (b) Cathode and Anode

Q.(33) Define Amplitude, loudness, pitch and frequency of sound. (5)

Or

What are the products of petroleum and write their uses?

Q.(34) How was dolly sheep cloned write down the process? (5)

Or

Describe how appearance of moon changes?

Q.(35) Differentiate between regular and diffused reflection including ray diagram. (5)

Or

Write down the role of microorganisms?

Q.(36) Write down the properties of Metals and nonmetals? (5)

Or

Describe the following: (a) Acid rain (b) Global warming​

Answer 1

Answer:

threshing is use by farmers to separate grains from the stalks

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