important mcq science questions of class 10th

Asked: July 12, 2021In: Class 10 Science

Given below is the list of vegetables are available vegetables in the market. Select from these the two vegetables having homologous structures:- Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

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daanish

Asked: July 12, 2021In: Class 10 Science

A student takes about 4 mL of distilled water in four test tubes marked P, Q, R and S. He then dissolves in each test tube an equal amount of one salt in one test tube, namely, sodium sulphate in P potassium sulphate in Q, calcium sulphate in R and magnesium sulphate in S. After that he adds an equal amount of soap solution in each test tube. On shaking each of these test tubes well, he observes a good amount of lather (foam) in the test tubes marked.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Poll

daanish

Asked: July 12, 2021In: Class 10 Science

While preparing soap a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Poll

daanish

Asked: July 12, 2021In: Class 10 Science

While preparing soap, in a school laboratory, which one of the following is added with a vegetable oil:

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

bhargav

Asked: July 9, 2021In: Class 10 Science

In which direction – towards or away from the lens, does he move the screen to focus the object?

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

bhargav

Asked: July 9, 2021In: Class 10 Science

List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube. Write chemical equation for the reaction that occurs.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Poll

bhargav

Asked: July 9, 2021In: Class 10 Science

Four students A, B, C and D reported the following set of organs to be homologous. Who is correct?

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

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bhargav

Asked: July 9, 2021In: Class 10 Science

Four students P, Q, R and S traced the path of a ray of light passing through a glass slab for an angle of incidence of 40″ and measured the angle of refraction. The values as measured by them were 18″, 22″;25″ and 30″ respectively. The student who has performed the experiment methodically is

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Poll

bhargav

Asked: July 9, 2021In: Class 10 Science

A student has obtained a point image of a distant object using the given convex lens. To find the focal length of the lens he should measure the distance between the:

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Poll

bhargav

Asked: July 9, 2021In: Class 10 Science

A student prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below:

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board. Important MCQ Science Questions of Class 10th.

Given below is the list of vegetables are available vegetables in the market. Select from these the two vegetables having homologous structures:- Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)

While preparing soap a small quantity of common salt is generally added to the reaction mixture of vegetable oil and sodium hydroxide. Which one of the following may be the purpose of adding common salt?

While preparing soap, in a school laboratory, which one of the following is added with a vegetable oil:

In which direction – towards or away from the lens, does he move the screen to focus the object?

List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube. Write chemical equation for the reaction that occurs.

Four students A, B, C and D reported the following set of organs to be homologous. Who is correct?

A student has obtained a point image of a distant object using the given convex lens. To find the focal length of the lens he should measure the distance between the:

A student prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below:

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