SSC (English Medium) 10th Standard - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Write chemical equation for the event.
Aluminium came in contact with air.

Write a chemical equation for the event.

Iron filings are dropped in aqueous solution of copper sulphate.

Write the chemical equation for the event.

A reaction was brought about between ferric oxide and aluminium.

Write chemical equation for the event.

Electrolysis of alumina is done.

Write a chemical equation for the following event.

Zinc oxide is dissolved in dilute hydrochloric acid.

Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.

Observe the figure and write accurate conclusion regarding refraction of light.

What is the correct reason for blinking / flickering of stars? Explain it.
a) The blasts in the stars.
b) Absorption of star light by the atmosphere.
c) Motion of the stars.
d) Changing refractive index of gases in the atmosphere.

What are space expeditions? Explain their need and importance in your words. 

i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine

i) Observe the following reaction and answer the following questions.
`CuSO_4 (aq) + Fe (s) →  FeSO_4(aq) + Cu (s)`
a) Identify and write the type of chemical reaction.
b) Write the definition of above reaction.

The reaction of iron nail with copper sulphate solution is ______ reaction.

Explain the types of reaction with reference to oxygen and hydrogen. Illustratre with examples.

The phenomenon of splitting of light into its component colours is ___________ .

Choose the correct alternative and rewrite the following:

A glass slab is placed in the path of convergent light. The point of convergence of light

Differentiate between conductors and insulators.

Draw a labelled diagram: Dispersion of light through a prism.

Answer the following:

What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light. 

Rewrite the following statement by selecting the correct option:

If a ray of light strikes a glass slab at an angle of 600 with the surface of the slab, the angle of incidence must be __________________.

Match the Columns: