Home
Class 10
CHEMISTRY
A student takes 1 g of sodium hydroxide....

A student takes 1 g of sodium hydroxide. He adds it to 50 mL of water taken in a plastic bottle and shakes the content well. Which of the following observation is correct?

A

Sodium does not dissolve in water.

B

A white precipitate is formed

C

The temperature of the reaction solution increases

D

The resulting solution is acidic

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL REACTIONS AND EQUATIONS

    TARGET PUBLICATION|Exercise Complete the pragraph|2 Videos
  • CHEMICAL REACTIONS AND EQUATIONS

    TARGET PUBLICATION|Exercise Name the following|20 Videos
  • CARBON COMPOUNDS

    TARGET PUBLICATION|Exercise Chapter Assessment(Give scientific reasons.)|3 Videos
  • METALLURGY

    TARGET PUBLICATION|Exercise CHAPTER ASSESSMENT|12 Videos

Similar Questions

Explore conceptually related problems

Apparatus: Two plastic bottles, measuring cylinder, thermometer, etc Chemicals: Potassium nitrate, sodium hydroxide, water, etc. (Sodium hydroxide being corrosive, handle it carefully in presence of teacher.) Procedure: Take I 00 mL water in each of the two plastic bottles. Plastic being insulator of heat, the dissipation of heat can be prevented. Note the temperature of water in the bottles. Put 5 g potassium nitrate (KNO_3) in the bottle and shake well. Note the temperature of the solution formed. Put 5 g sodium hydroxide (NaOH) in the other bottle. Shake the bottle well. Note the temperature. In the first bottle, the process of dissolution of potassium nitrate took place while in the second bottle, the process of dissolution of sodium hydroxide took place As per your observation which one is exothermic process and which is an endothermic process?

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. What is the final colour of the solution in Activity 1

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. What was the initial colour of the solution?

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. What are the products formed in Activity 2?

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. Based on these activities, what can you conclude about the reactivity of elements zinc and iron as compared to that of copper?

A student performed following two activities in school laboratory: Activity 1: Addition of zinc dust into copper sulphate solution taken in a test tube. Activity 2: Addition of an iron nail into copper sulphate solution taken in a test tube. He noted down his observations and concluded that chemical reaction occurs in both the cases based on the observed colour change of the resulting solution. What is the final colour of the solution in Activity 2?

A student takes about 2 mL ethanoic acid in a dry test tube and adds a pinch of sodium carbonate to it. What will he observe ?

5.0 g of sodium hydroxide ( Molar mass 40 g mol^(-1) ) is dissolved in little quantity of water and the solution is diluted up to 100 mL. What is the molarity of the resulting solutions ?

Activity 2 : Bring the active dry yeast powder from market . Take 50ml lukewarm water in a conical flask. Add 5gm of active dry yeast powder and 10 gm table sugar to that water andmix the mixture well. Keep the flask in warm place and after an hour take a drop of that mixture on a clean glass slide. Put a cover-glass on that drop and observe it under the compound microscope.

Answer the following questions : Take two coils of about 50 turns. Insert them over a nonconducting cylindrical roll as shown in fig. A thick paper roll can be used . Connect coil 1 to a battery with a plug key k. Connect coil 2 to a galvanometer G. plug the key and observe the deflection in the galvanometer. Unplug the key and again observe the deflection. Note ( your observations. What conclusions do you draw from these observations?

TARGET PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-Chapter Assessment
  1. A student takes 1 g of sodium hydroxide. He adds it to 50 mL of water ...

    Text Solution

    |

  2. The chemical formula of the rust is

    Text Solution

    |

  3. Apparatus: Test tube, glass rod, beaker, Bunsen burner, etc. Chemic...

    Text Solution

    |

  4. Give scientific reasons It takes time for pieces of shahabad tiles ...

    Text Solution

    |

  5. True or false. If false, write the correct sentence. In a chemical e...

    Text Solution

    |

  6. Name the gas formed when copper reacts with dilute nitric acid

    Text Solution

    |

  7. Identify the odd one out and justify. Vaporisation of water, dissoluti...

    Text Solution

    |

  8. Give scientififc reasons When the gas formed on heating limestone is...

    Text Solution

    |

  9. Give scientific reasons While preparing dilute sulphuric acid from ...

    Text Solution

    |

  10. Identify reductants and oxidants in the following reactions. 2PbO + ...

    Text Solution

    |

  11. A student was studying combination reaction by adding few pieces of ca...

    Text Solution

    |

  12. When the solution of sodium carbonate is added to the solution of calc...

    Text Solution

    |

  13. A student performed following two activities in school laboratory: A...

    Text Solution

    |

  14. A student performed following two activities in school laboratory: A...

    Text Solution

    |

  15. A student performed following two activities in school laboratory: A...

    Text Solution

    |

  16. A student performed following two activities in school laboratory: A...

    Text Solution

    |

  17. A student performed following two activities in school laboratory: A...

    Text Solution

    |

  18. The chemical formula of the rust is

    Text Solution

    |

  19. Apparatus: Test tube, glass rod, beaker, Bunsen burner, etc. Chemic...

    Text Solution

    |

  20. True or false. If false, write the correct sentence. In a chemical e...

    Text Solution

    |

  21. Name the gas formed when copper reacts with dilute nitric acid

    Text Solution

    |