Q1. Which one of the following is a metal?

Q2. Fuse wire is made of _____?

Q3. According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in _____.

Q4. One thousand watt power is called as _____.

Q5. LED technology is energy efficient. What does LED stand for?

Q6. The meter installed in our homes measure electricity in _____.

Q7. In the electricity meter, the digit to the extreme right is:

Q8. All forms of energy that we use are ultimately transformed into _____.

Q9. Gates is known as ______________ of the personal computer revolution.

Q10. Bats can also fly in dark because they are capable of taking the help of _____.

Q11. The second most abundant metal found in the earth’s crust is _____.

Q12. The gases which are used by divers as an artificial atmosphere are helium and _____.

Q13. The primary function of the feathers in birds is to

Q14. A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to _____?

Q15. Which one of the following sets of colour combinations is added in colour vision in TV?

Q16. Lead ball falls through water more slowly than through air because

Q17. As the temperature of ice rises, the ice melts and its density _____.

Q18. Optical fibers are the fine strands of _____.

Q19. The speed of sound is _____.

Q20. The rear view mirror of a motor vehicle is _____.

Q21. In which country alcohol is used as fuel for vehicles?

Q22. Which of the following types radiations is absorbed by the upper layer of the atmosphere?

Q23. Silicon is a _____.

Q24. For sending sound waves at large distance, which waves are used?

Q25. The volume percentage of nitrogen in air is _____.