class 7th crossword (setB)

123456789
Across
  1. 2. A substance that tastes bitter and feels slippery to touch.
  2. 3. A base that is soluble in water.
  3. 5. The acid present in an ant's sting.
  4. 7. A device used to break or complete an electric circuit.
  5. 9. The thin wire inside an electric bulb that glows when current passes.
Down
  1. 1. A combination of two or more electric cells.
  2. 3. Substance that tastes sour and turns blue litmus red.
  3. 4. Natural indicator obtained from lichens.
  4. 6. Continuous and closed path along which electric current flows.
  5. 8. energy efficient device for light.