Home
Class 11
PHYSICS
Which of the following statements are no...

Which of the following statements are not correct?
a) Shearing stress is possible in liquids but not in gases
b) Elastomers are class of solids that donot obey Hooke.s law
c) Elastic limit is the property of material of body where as elasticity is the property of a body
d) Bulk modulus of most of the solid material is zero.

A

Both a and b

B

only c and d

C

only b and c

D

only a, c and d

Text Solution

Verified by Experts

The correct Answer is:
4
Promotional Banner

Similar Questions

Explore conceptually related problems

Compare the following properties of solids, liquids and gases. a) Shape b) Volume c) Compressibility d) Diffusion

Regarding elasticity which of the following statements are correct? a) the point where the elasticity ends and plasticity starts is called yield point b) breaking stress depends on the area of cross section c) the value of poisons ratio can not be greater than 0.5 d) air is more elastic than water

Select the correct alternative(s) a) Elastic forces are always conservative b) Elastic forces are not always conservative c) Elastic forces are conservative only when Hooke's law is obeyed d) Elastic forces may be conservative even when Hooke's law is not obeyed

(A): Mechanical transverse waves can propagate only in medium with shear inodulus of elasticity (B) : Longitudinal waves need bulk modulus of elasticity and are therefore. Possible in all media, solids, liquids and gases

Among the following which is/are correct regarding abnormal properties of lithium in IA group. A) LiHCO_(3) is not obtained in solid state while other hydrogen carbonates are solids B) Reddish brown NO_(2) is not obtained in the thermal decomposition of LiNO_(3) C) Lithium unlike other alkalimetals forns no ethynide on reaction with ethyne D) Lithium is much harder than other alkali metals

Only the surface atoms in an adsorbent, play an active role in adsorption. These atoms posses some residual forces like vander Waal's forces and chemical forces. In the process of adsorption, weak adsorbate is substituted by strong adsorbate. Activated charcoal used in gas mask is already exposed to the atmospheric air, so the gases and water vapours in air are adsorbed on its surface. When the mask is exposed to chlorine atmosphere, the gases are displaced by chlorine. Porous and finely powdered solids, e.g., charcoal and Fuller's earth adsorb more as compared to the hard non-porous material. It is due to this property that the powdered characoal is used in gas masks. In general, easily liquefiable gases like CO_2, NH_3, Cl_2 , and SO_2 etc., are adsorbed to a greater extent than the elemental gases, eg., H_2, N_2, O_2, He , etc. Which of the following gases will be most easily adsorbed by the charcoal in the gas mask