Which type of polymer carbon is? A natural polymer or synthetic polymer or both? Are cellulose, wool and silk polymers?
Define acids. Give example of weak acid, and very weak acid.
Differenciate between Nylon, Rayon and Dacron.
What are the harmful effects of DDT?
The HCF of (n + 3) and (7n + 48) is k, where n is a natural number. How many values of k are possible?
How you can get the sum of 31 from five 3's? It is necessary to use all 3's.
A car covers a certain distance taking 7 hours for going one-way. Speed was increased by 12 kmph at the time of fro journey and the journey gets completed in 5 hours. What is total distance covered by the car?
what would be the next number in the sequence 2, 20, 74, 110?
what number would next appear in the sequence 8, 20, 28, 44,
Imagine that you are driving a car from mysore to bangalore, which lies 250 kms away from each other, at a speed of 75mph. Car no is KA-19 DB1955. Now on the basis of this information, find the date of birth of the driver.
Perimeter of front wheel of a vehicles is 30 and that of rear wheel is 20. If front wheel revolves 240 times, how many revolutions will the rear wheel take?
Find the smallest four digit number which is divisible from 1 to 10.
State the various types of rainfall. Which type of rainfall prevails if it rains in the Gangetic plains due to Himalayas?
What is the reason that no type of rainfall gives sufficient rainfall to Rajasthan region?
Why do we spread dry clothes to make them dry?
What is the relation between drying of clothes and humidity in the air?
Why our wet hairs stick with each other?
Why do fish die (after some time and not instantly) when removed from the water?
A tiger is 1km away from you. What will be the time taken by him to eat you up, approximately? The friction of the ground surface is zero.
The advantage that a polar bear has thick layer of fat is that it can protect itself in low temperatures. What are the disadvantage of having a thick fat layer (to the polar bear)?
Is the rotation of earth around the Sun related or not to the rotation of the Mars?
Mercury is harmful still it is used in thermometers, CFL, to measure pressure etc. Why?
Does there exist any frictional force on the moon?
What are contact forces?
Forces are “due to an interaction between two bodies” Explain the statement.