Question # 1

The product fo the reaction between zinc and dilute sulphuric acid are.

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Zinc oxide and water

Zinc sulphide and water

Zinc sulphate and hydrogen

Zinc sulphide and hydrogen

Cleaning of ...... by artificial method is called dialysis.

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Water

Urine

Acid

Blood

Elements of group 17 are called.

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Carbon family

Noble gases

Nitrogen family

Halogen family

-------------------- is/are used to coat the backside of the mirror.

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Silver

Copper

Aluminium

Silver and Aluminium

The three key ingredients used in making soap are.

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Oil, lye, water

NaOH , Oil, lye

Glycerol, oill, lye

glycerol, water, oil

As we go up in the air.

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Atmospheric pressure increases

Atmospheric pressur edecreases

Atmospheric pressur edoes not change

Atmosphericpressur ebecomes zero at the height of 1 km

To make bioplastic, we use.

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Starch

Glycerol

Distilled water

Starch, Glycerol and distilled water.

Angle of incidence is equal to he angle of reflection ,It is first law of.

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Refraction

Dispersion

Reflection

Diffraction

Lactic Acid is found in.

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Grapes

Tomatoes

Ant's sring

Yogurt

The equation in which the number of atoms of each element on both sides are not equal is called.

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Quadratic equation

Unbalanced equation

Balanced equation

Standard equation

Before mitosis, sets of chromosomes are.

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Two

Three

Four

Five

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