Preparation for SEE

In which AD Netwon started a law how the gravitation between two bodies depends

• 1687 AD
  

• 1661 AD

• 1606 AD

Why are most carbon compounds poor conductors of electricity?

____ is one of the best reflectors of light.

• Gold

• Silver

• Brass

• Aluminium

Reflection of light have___laws.

• 1

• 2

• 3

• 4

If an object is placed at a distance of 10 cm in front of a plane mirror how far would it be from its image.

• 10cm

• 20cm

• 30cm

• 40cm

WHAT IS THE MELTING POINT OF TUNGSTEN IN DEGREE CELSIUS?

• ABOUT 3460

• ABOUT 5437

• ABOUT 3380

• ABOUT 2225

WHICH OF THIS IS GOOD CONDUCTOR OF ELECTRICITY?

• AMMETER

• VOLTMETER

• BOTH A AND B

• NON OF THESE

A chemical reaction has taken place in which of the following process?

• (i) Ice melts into water

• (ii) A wet shirt got dried in sunlight

• (iii) A brown layer is formed over iron rod kept in air

• (iv) Sugar getting dissolved in water

Which of the following reactions satisfies this condition? :

Iron nails kept with dilute sulphuric acid and ferric sulphite solution is formed and hydrogen gas is released.

• (i) 2Fe(s) + 3H2 SO4(l)→ Fe2 (SO4)3(l) + 3H2(g)

• (ii) 2Fe(s) + 2H2SO4(aq) → Fe2(SO4)3(s) + 4H2 (g)

• (iii) 2Fe(s) + 2H2SO4 (aq) → 3Fe2(SO4)3(aq) + 2H2(g)

• (iv) 2Fe(s)+3H2SO4 (aq) → Fe2(SO4)3 (aq) + 3H2 (g)

The chemical formula of lead sulphate is

• (a) Pb2SO4

• (b) Pb(SO4)2

• (c) PbSO4

• (d) Pb2(SO4)3