1. Which is not a 'renewable' resource of energy ?   Water   Wind   Sun   Petroleum   Hint Half-n-half Clue   2. _______ convert chemical energy to electrical energy.   Microwave ovens   Air conditioners   Bulbs   Battery cells   Half-n-half Clue   3. _______ is made from bamboo plants.   Rubber   Silk   Paper   Jute   Half-n-half Clue   4. Nitrogen-fixing bacterium   Rhizobium   Lactobacillus   Clostridium   Salmonella   Half-n-half Clue   5. When water is boiled, it is converted into steam. This is an example of conversion of _______ energy to mechanical energy.   Chemical   Heat   Light   Atomic   Half-n-half Clue   6. In atom bomb explosion, _______ energy is primarily converted into _______ energy.   chemical, atomic   atomic, heat   atomic, sound   chemical, light   Half-n-half Clue   7. Interaction between organisms of different species so as to get benefit from each other is known as   Saprophytism   Etiolation   Predation   Symbiosis   Half-n-half Clue