Khi nói về NaOH và Na2CO3, kết luận nào sau đây không đúng?  

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  In the part of the city __________ I live, nothing interesting ever happens.
  
  

• Choose the best answer for the following sentence:

  They lost the game,___________ disappointed their supporters.
  
  

• Find a mistake in the four underlined parts of the sentence and correct it:

  My teachers congratulated me for my success.

• Find a mistake in the four underlined parts of the sentence and correct it:

  I shall contact with you again as soon as the dates of the trip have been confirmed.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Everyone knows that smoking effects your health.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Either parents are able to sign the form.

• Choose the word that has the underlined part pronounced differently from the rest:

  photos               social                    another                     broke

• Choose the word that has the underlined part pronounced differently from the rest:

  introduce                   solution                    honor                     computer

• Choose the word that has the underlined part pronounced differently from the rest:

  early                 near                   hear                     appear

• Choose the best answer for the following sentence:

  My little son! It’s time you ______________________ to bed.