In an isochoric process, the increase in internal energy is equal to:
the sum of heat absorbed and work done
the work done
heat absorbed
heat evolved
75 c.c. of N/5 H2SO4, 10 c.c. of N/2 HCl and 30 c.c. of N/10 HNO3 are mixed together. The strength of the resulting acid mixture is:
0.1N
0.2N
0.3N
0.4N
Among the following compounds which is planar in shape is
acetylene
benzene
isobutene
methane
B.
benzene
All the carbon atoms in benzene are in sp2 state of hybridization, hence, all the six carbons and six hydrogen atoms attached with these carbon lie in a plane.
The pH of blood is :
greater than 10
less than 6
greater than 7 and less than 8
greater than 8 and less than 9