name the physical quantity which is determined by the rate of change of linear momentum.
name two organells that contain DNA .what are their two types.give one function of each
a sample of dal was taken in a boiling tube 2ml of water was added and heated.A few drops HCl were added .The sample changed color to pink,it is because dalhad been adulterated with
turmeric powder
rangoli powder
potassium dichromate
metanil yellow

Open in App

Solution

1. Force
2. Chloroplasts and mitochondria possess their own DNA. Chloroplast is the site of photosynthesis in green plants while mitochondria is the site of ATP synthesis.
3. Metanil yellow

Suggest Corrections

Similar questions

Q. Four samples of arhar dal were taken in four test tubes with some water in each and
labelled P,Q, R and S. A few drops of the following were added to these test tubes,
water to test tube P, HCl to test tube Q, NaOH to test tube R and alcohol to test tube S.
We would be able to confirm adulteration of the dal with metanil yellow in test tubes :

Write down the changes that will be seen in each instance and explain the reason behind it.

(a) 50ml water is added to 50ml solution of copper sulphate.

(b) Two drops of the indicator phenlphthalein were added to 10ml solution of sodium hydroxide.

(d) A litmus paper was dropped into 2ml dilute HCl. Then 2ml concentrated NaOH was added to it and stirred.

(e) Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH.

(f) Zinc oxide was added to dilute HCl and zinc oxide was added to dilute NaOH.

(g) Dilute HCl was added to limestone.

(h) Pieces of blue vitriol were heated in a test tube. On cooling, water was added to it.

(i) Dilute H 2 SO 4 was taken in an electrolytic cell and electric current was passed through it.

Q. When

2

3

drops of Benedict's reagent are added to a urine sample and heated gently, it turns yellow. This colour change indicates that.

Q. When 2 to 3 drops of Benedicts reagent are added to a urine sample and heated gently, it turns yellow. This colour change indicates that

Question 20

Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C’ but could not get any change in colour. Suggest the possible cause for the variation in their results.

Join BYJU'S Learning Program

1. Force2. Chloroplasts and mitochondria possess their own DNA. Chloroplast is the site of photosynthesis in green plants while mitochondria is the site of ATP synthesis. 3. Metanil yellow

1. Force
2. Chloroplasts and mitochondria possess their own DNA. Chloroplast is the site of photosynthesis in green plants while mitochondria is the site of ATP synthesis.
3. Metanil yellow