3. Turmeric is a natural indicator. On adding acid and base separately to itspaste, what would happen?(a) Yellow in both acid and base.(b) Yellow in acid and red in base.(c) Pink in acid and yellow in base.(d) Red in acid and blue in base.4. Phenolphthalein is a syntheticindicator and its colours in acidic andbasic solutions, respectively are(a) red and blue.(b) blue and red.(c) pink and colourless.(d) colourless and pink5. When the soil is too basic, plants donot grow well in it. To improve its qualitywhat must be added to the soil?(a) Organic matter(b) Quick lime(c) Slaked lime(d) Calamine solution

3. Turmeric is a natural indicator. On adding acid and base separate

1.	3. Turmeric is a natural indicator. On adding acid and base separately to itspaste, what would happen?(a) Yellow in both acid and base.(b) Yellow in acid and red in base.(c) Pink in acid and yellow in base.(d) Red in acid and blue in base.4. Phenolphthalein is a syntheticindicator and its colours in acidic andbasic solutions, respectively are(a) red and blue.(b) blue and red.(c) pink and colourless.(d) colourless and pink5. When the soil is too basic, plants donot grow well in it. To improve its qualitywhat must be added to the soil?(a) Organic matter(b) Quick lime(c) Slaked lime(d) Calamine solution
Answer» 3 rd one answer - B , 4d one answer - d , 5th - organic matter Explanation: 3 rd - Turmeric is yellow in acidic and neutral solutions; is bright red in basic solutionst , 4d - Phenolphthalein [3,3-Bis (4- hydroxyphenyl)- 2 benzofuran- 1-one] is often used as an indicator in acid-base titrations. It turns colourless in acidic solutions and pink in basic solutions. 5th - To IMPROVE the quality of a basic soil, an acid should be added. Slaked lime (Ca(OH)2) and quick lime (CAO) are basic in nature. Urea is neutral. Hence, organic matter is the answer.

Discussion

No Comment Found

Related InterviewSolutions

6. Who first identified cells and when?
What is hyaline cartilage??
Melting happens when solid material change into the liquid form
16. It is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance.17. It occurs when you use or lose more fluid than you take in, and your body does not have enough water andout its normal functions.18 It occurs when people push themselves too hard during physical activities like Dancing causes injury whenand his or her physical capacity and tolerances of his or her body's soft touc.19. Stretching or tearing of ligaments,20. Stretching or tearing tendons or muscles.21. Refers to a group of heat-related conditions characterized by an abnormally high body temperature in otherof hypothermia22.Occurs when the body's heat-regulation system becomes overwhelmed by outside factors, causing amperature to rise23. It is a medical emergency that occurs when your body loses heat faster than it can produce heat, causingody temperature24. Occurs as your body temperature falls below 95 F (35 C).25. It is used by our body cells, organs, and tissues to help regulate its temperature and maintain other bodilyration.
Why does sun appear blue in colour
It refers to the size or strenght of the force?A.friction B.direction C.magnitude D.gravitation
What is work and state it's SI unit.
Co2+CaCo3+H2o→ Answers this question
What is motion how motion is measured in different terms
What do u understand of Einstein's nature from his conversations with his history teacher, his Mathematics teacher and the head teacher.Don't spam

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment