When a liquid is getting converted into solid, the latent heat is

Question

i) When a liquid is getting converted into solid, the latent heat is …………………………………

ii) Identify the type of following reaction :

C12H22O11 → 12C + 11H2O

iii) In Dobereiner’* triad containing Li, Na, K, if atomic masses of Lithium & Potassium are 6.9 and 39.1, then what will be the atomic mass of Sodium?

iv) Considering first correlation, complete the second.

Hubble telescope : At 569 km above the earth’* surface Orbit of Hubble telescope :

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

Answer 1

i. Released.

ii. Decomposition Reaction

iii. According to Dobereiner’* triad rule :

Atomic Mass of Sodium = 6.9 +39.1 / 1 =23

iv. Hubble telescope : At 569 km above the earth’* surface.

Orbit of Hubble telescope : Low Earth Orbit

v. When a light ray passes from a rarer medium to a denser medium, it bends towards the normal.