Home
Class 7
CHEMISTRY
Which of the following is/are true about...

Which of the following is/are true about indicators ? (i) Hibiscus and turmeric papers are examples for natural indicators (ii) Phenolpthalein and Methyl orange are examples for Synthetic indicators (iii) Indicators show different colours in acidic and basic solutions (iv) These tell us whether a substance is acidic or basic

A

i and iii only

B

ii and iv only

C

i,iii and iv only

D

all of the above

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ACIDS AND BASES

    NCERT TELUGU|Exercise Improve your learning |22 Videos

  • Acid And Bases

    NCERT TELUGU|Exercise Exercise |44 Videos

  • AIR, WINDS AND CYCLONES

    NCERT TELUGU|Exercise Improve your learning|13 Videos

Similar Questions

Explore conceptually related problems

Correct the statement if it is wrong: Indicators show different colours in acidic and basic solutions.

Methyl orange and Phenolphthalein are indicators. Collect the information about their colour change in Acid and Basic solutions.

Answer the following question Give examples to different types of acid and base indicators.

Assertion (A) : Onion vanilla essence can be used as olfactory indicators. Reason (R) : some substances change their odour in acidic or basic media.

Which of the following is/are true about carbohydrates.(i) These are energy giving substances,(ii) These are tested with Iodine solution,(iii) These release chemical energy during oxidation,(iv) These are rich in Potato and food grains

Prepare a table based on the colour responses of acid, base and salt with indicators such as red litmus paper, blue litmus paper, methyl orange and phenolphthalein indicators.

Which of the following statements are correct for alkali metal compounds? (i)Superoxides are paramagnetic in nature. (ii) The basic strengths of hydroxides increase down the group. (iii) The conductivity of chlorides in their aqueous solutions decreases down the group. (iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.

The following are some statements about periodic properties i) Atomic size decreases from left to right in a period ii) The EA of 2nd element in VA, VIA, VIIA are greater than the first element iii) Acidic nature of oxides decreases and basic nature of oxides of elements increases down the group

Which of the following statements about TLC are correct ? (i) Glycine is identified on TLC plate due to its colour. (ii) Amino acids can be detected by spraying the TLC plate with Ninhydrin solution. (iii) The retardatin factor is the ratio of the distance travelled by the solute to that of the solvent from the base line. (iv) Sodium chloride is commonly used as an adsorbent.

If a solution of a substance changed red litmus paper into blue, guess the colour of it in methyl orange indicator.

NCERT TELUGU-ACIDS AND BASES-Improve your learning
  1. Which of the following is/are true about indicators ? (i) Hibiscus and...

    Text Solution

    |

  2. The sting of a wasp is basic. How can we treat the sting of a wasp?

    Text Solution

    |

  3. Why are acids not stored in a metal container?

    Text Solution

    |

  4. Acidic, basic and neutral solutions are given in three test and you ar...

    Text Solution

    |

  5. When drops of lemon juice are put on blue litmus it turns red. What wi...

    Text Solution

    |

  6. What happens when nitric acid is added to egg shell?

    Text Solution

    |

  7. Turmeric stains on white clothes, when washed with soap, turn red. Why...

    Text Solution

    |

  8. Ammonia is present in window cleaners. It turns red litmus blue. What ...

    Text Solution

    |

  9. What is the nature of urea? It is acdic/basic/netural? How can we veri...

    Text Solution

    |

  10. Red litmus paper is dipped in a solution. It remains red. What is the ...

    Text Solution

    |

  11. What is the effect of basic substances on turmeric paper?

    Text Solution

    |

  12. Can flowers and turmeric papers also be called as indicators. Why?

    Text Solution

    |

  13. Correct the statement if it is wrong: Indicators show different colou...

    Text Solution

    |

  14. Correct the statement if it is wrong: Sodium hydroxide blue litmus re...

    Text Solution

    |

  15. Correct the statement if it is wrong: Tooth decay is caused by the pr...

    Text Solution

    |

  16. Take vinegar, lemon juice, soapy water, baking soda in different vesse...

    Text Solution

    |

  17. Visit a doctor. Find out the medicines she prescribes to treat acidity...

    Text Solution

    |

  18. Prepare red cabbage juice by boiling a piece of red cabbage in water. ...

    Text Solution

    |

  19. Collect different flowers and prepare their natural indicators with th...

    Text Solution

    |

  20. Test the nature of lemon juice and milk sample with the help of natura...

    Text Solution

    |

  21. How do you feel about nature? It is a big natural laboratory that cont...

    Text Solution

    |