Science and Technology 1 Model set 2 by shaalaa.com 2024-2025 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

A Rainbow is a beautiful natural phenomenon formed because of the following:

Dispersion of light

Refraction of light

Total internal reflection of light

All of these

Which of the following statement is incorrect with reference to the reaction of silver nitrate with sodium chloride?

Chemical formula for silver nitrate is AgNO₃.

Silver nitrate on reaction with sodium chloride gives white precipitate.

Precipitate formed is soluble in nature.

When aqueous solutions of the two are mixed a double replacement reaction takes place.

The moon attracts Earth with a force of 10²⁰ N, and then the force with which the Earth attracts the moon is ______.

Less than 10²⁰ N.

10²⁰ N.

10⁻²⁰ N.

greater than 10²⁰ N.

The distance between the optical centre and principal focus of a lens is known as ______.

focal length

radius of curvature

optical centre

principle axis

In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are ______.

Perpendicular to each other.

Non-parallel to each other.

Parallel to each other.

Intersecting each other.

Find the odd one out:

Lithium (Li)

Sodium (Na)

Nitrogen (N)

Magnesium (Mg)

Complete the correlation:

IRNSS : Direction showing : : INSAT : ______ Satellite

Write true or false:

The anomalous behaviour of water can be studied with Hope's apparatus.

True

False

Match the columns:

How much is the relative humidity at the dew point?

Give scientific reasons.

Silver amalgam is used for filling dental cavities.

In the electric equipment producing heat like iron, electric heater, boiler, toaster etc., an alloy such as nichrome is used, not pure metals.

Give scientific reasons for the following:

Newton's gravitational law is the universal law of gravitation.

Write the IUPAC name for the following structural formula:

\[\begin{array}{cc}
\ce{CH3-CH-CH3}\\
|\phantom{..}\\
\ce{OH}
\end{array}\]

Observe the following structure and give IUPAC name for the structural formula correctly.

\[\begin{array}{cc}
\ce{O}\phantom{..............}\\
||\phantom{..............}\\
\ce{CH3 - C - CH2 - CH2 - CH3}
\end{array}\]

Write a short note on Presbyopia.

Observe the given figure of a current-carrying solenoid and write the labels of A and B correctly.

How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?

• Complete the given chemical reaction:
  \[\ce{CuSO4_{(aq)} + Fe_{(s)} ->}\] _______ + _______
• Name the type of the reaction.

Answer the following questions related to the modern periodic table.

Name the blocks with the groups that they consist of.

Answer the following questions related to the modern periodic table.

Which block elements are known as transition elements?

Answer the following questions related to the modern periodic table.

How are elements placed around the zig-zag line in the p-block of the periodic table?

The figure given below shows the magnetic field around the conductor. Study it and answer the questions:

1. What changes are caused by increasing current?
2. What do you see when the magnetic needle is kept a little away from the wire?
3. In the second part of the figure, the iron filings arrange themselves in a circular manner around the wire. Why does this happen?

Observe the given figure and answer the following questions:

1. Name the process represented by the figure.
2. State the two laws related to the process.

State the importance of Space Missions.

Observe the given figure showing the orbit of a planet moving around the Sun and write the three laws related to it:

The orbit of a planet moving around the Sun

Read the text below and answer the questions that follow:

A small amount of hydrochloric acid was taken in a test tube. The test tube was heated. A glass rod was dipped in the ammonia solution and held on the top of the test tube. A white smoke was seen emanating from the tip of the glass rod.

1. What must have happened?
2. Which colour of gas is formed?
3. Write the chemical equation for the reaction.

Currently, there are more than 2,500 man-made satellites orbiting the earth. The satellites are launched with a specific objective in mind pertaining to several uses.

Answer the following questions based on the concept of satellites given in the passage:

1. Name a natural satellite of the earth.
2. What is an artificial satellite? Name the first artificial satellite.
3. What is the purpose of sending such satellites?

Complete the following table for convex lens:

Observe the following diagram and answer the questions.

1. Construction of which equipment does the above diagram show?
2. On which principle does this equipment work?
3. According to which law the coil ABCD rotates?
4. Write the law in your own words.
5. Where is this equipment used?

Observe the following figure and write the answer of the question.

1. Which process is shown in the figure?
2. Explain the chemical reaction shown in the figure.
3. Write the reactions on anode and cathode.