Studies show that chlorofluorocarbons (CFCs) such as CFC-12, are contributing to the depletion of the stratospheric ozone layer.
A) True
B) False

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false

Ahousehold refrigerator operating steadily and with a coefficient of performance of 2.5 removes energy from a refrigerated space at a rate of 650 kj/h. evaluating electricity at $0.06 per kw.h, determine the cost of electricity in a month when the refrigerator operates for 360 hours.