Q1. Which one of the following is not an example of electromagnetic waves?
(a) Ultraviolet rays
(b) Radio waves
(d) Sound waves in air
Q2. The example of thermosetting and thermoplastic polymer respectively is
(a) polystyrene, polyvinylchloride
(b) bakelite, polystyrene
(c) polyethene, polyacredonitrile
(d) polystyrene, urea-formaldehyde resin
Q3. Which of the following is not a ‘green house gas’?
(d) N2 O
Q4. Which of the following is weakest Lewis Base?
Q5. The cooking gas is mainly a mixture of the following two gases
(a) Methane and Ethane
(b) Ethane and Propane
(c) Propane and Butane
(d) Butane and Pentane
Q6. In bryophyllum reproduction occurs
(a) through stem
(b) through leaf
(c) through flower
(d) through root
Q7. Radiation with maximum penetration power is
(a) infrared radiation
(b) ultraviolet radiation
Q8. Which of the following effect is not found in sound waves?
Q9. Which is significant for a fuse wire?
(a) Its melting point
(b) Its specific resistance
(c) Current flowing through it
(d) All of the above
Q10. Electronic configuration of Cr is
(a) 3d^5 4s^1
(b) 3d^6 4s^0
(c) 3d^4 4s^2
(d) 3d^5 4s^0