Q.1 Ramesh covers two-third of a certain distance at 4 km/h and the remaining at 5 km/h. if he takes 42 minutes in all, the distance is:
a) 2.5 km
b) 3 km
c) 4 km
d) 4.6 km
e) none of these
1. Stainless steel contains steel and ___________.
a) manganese
b) vanadium
c) nickel
d) chromium
e) None of these
1. Clear night are colder than cloudy nights because of --
a) conduction
b) condensation
c) radiation
d) insolation
1. What is the maximum limit of sound intensity in decibel units beyond which a human being cannot hear?
a) 80 decibel
b) 85 decibel
c) 90 decibel
d) 95 decibel