SSC (English Medium) इयत्ता १० वी - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Atomic number of metal ‚A‛ is 11, while atomic number of metal ‚B‛ is 20. Which of them will be more reactive? Write the chemical reaction of dilute HCl  with metal ‚A‛.

i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine

i. Which type of microscope has the arrangement of lenses shown in the  adjoining figure?
ii. Label the figure correctly.
iii. Write the working of this microscope.
iv. Where does this microscope used?
v. Suggest a way to increase the efficiency of this microscope.

The image obtained while finding the focal length of convex lens is ....................

Observe the following figure and answer the questions.

a) Which optical instrument shows arrangement of lenses as shown in the figure?
b) Write in brief the working of this optical instrument.
c) How can we get different magnifications in this optical instrument?
d) Draw the figure again and labelled it properly

Yesh find out F₁ and F₂ of symmetric convex lens experimentally then which conclusion is true.

Study the following figure and answer questions. 

a) After heating Calcium carbonate, which gas is formed in a test tube?
b) When we pass this gas through limewater what change, did you observe?
c) Write down the chemical reaction showing the product formation after heating the Calcium carbonate.

Observe the following figure and complete the table:

Surabhi from std. X uses spectacle. The power of the lenses in her spectacle is 0.5 D.

Answer the following questions from the given information:

1. Identify the type of lenses used in her spectacle.
2. Identify the defect of vision Surabhi is suffering from.
3. Find the focal length of the lenses used in her spectacle.

Taking into consideration the period of the elements given below, answer the following questions: 

1. Arrange the above elements in decreasing order of their atomic radii.
2. State the period to which the above elements belong.
3. Why this arrangement of elements is similar to the above period of modern periodic table?
4. Which of the above elements have the biggest and the smallest atom?
5. What is the periodic trend observed in the variation of atomic radius while going from left to right within a period?

How can the rate of the chemical reaction, namely, decomposition of hydrogen peroxide be increased?

Name the following diagram and explain the concept behind it.

State the modern periodic law.

The equivalent resistance of a parallel combination of two resistors of 30 Ω and 60 Ω is ______________.

(a) Fill in the blanks and rewrite the completed statements: 

(i) ________ group in the periodic table contains elements that are all gases at room temperature. 

(ii) Very fine particles mainly scatter ______ light.

Differentiate between conductors and insulators.

State Fleming’s Right Hand Rule.

Answer the following:

State the principles of the electric motor and electric generator. 

Fill in the blank and rewrite the completed statement:

________ group in the periodic table contains elements that are all gases at room temperature.