Science and Technology 1 Model set 2 by shaalaa.com 2021-2022 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

If a spacecraft is to be sent to travel to outer space, it must have a minimum velocity of _______.

11.2 km/s

11.6 km/s

13.2 km/s

1.4 m/s

Which of the following scientist invented the rule of electromagnetic induction?

Newton

Kepler

Mendeleev

Michael Faraday

The general molecular formula for the homologous series of alkynes is _______.

C_nH_2n

${\displaystyle {\text{C}}_{\text{n}}{\text{H}}_{\text{2n}+2}}$

${\displaystyle {\text{C}}_{\text{n}}{\text{H}}_{\text{2n}-2}}$

${\displaystyle {\text{C}}_{\text{n}}{\text{H}}_{\text{2n}-1}}$

In Myopia the human eye _______.

cannot see nearby objects distinctly

cannot see distant objects clearly

cannot see nearby as well as distant objects clearly

can see nearby as well as distant objects clearly

A group of students from COEP Pune sent a small satellite _______ through ISRO in 2016.

Luna 6

Apollo 6

Swayam

Param

Write the molecular formula of the given compound.

Ethyl ethanoate

Match the columns.

Alternating current : oscillatory :: Direct current : _______

If edible oil is left aside for a long time, it will get rancid.

Right

Wrong

Write the name.

The atom having the biggest atomic size from period 2.

Write scientific reason.

Benzene compounds are called aromatic compounds.

Write scientific reason.

Stars twinkle but we do not see the twinkling of planets.

Give a scientific reason.

Tungsten metal is used to make a solenoid type coil in an electric bulb.

Explain the characteristics of ionic compounds.

Two convex lenses of focal length 30 cm and 10 cm each are kept in contact with each other. Find the power of their combination.

Write a short note.

Escape Velocity

Explain the following reaction with their balanced chemical equation.

Ammonia gas reacts with hydrogen chloride. 

Observe the given figure and name the following.

Distinguish between:

Saturated hydrocarbons - Unsaturated hydrocarbons

Name the following diagram and explain the concept behind it.

Explain the reaction given in the figure.

Observe the given figure and answer the following questions.

1. Which colour light rays bend most?
2. Which colour light rays bend least.
3. What is the wavelength of violet light rays?

Choose the correct option from the bracket and complete the stanza.

(colour blind, actual, conical, light-sensitive, rodlike, colours)

The retina in our eyes is made up of many _______ cells. These cells are shaped like a rod and like a cone. The _______ cells respond to the intensity of light and give information about the brightness or dimness of the object to the brain. The _______ cells respond to the colour and give information about the colour of the object to the brain. Brain processes all the information received and we see the _______ image of the object. Rod like cells respond to the faint light also but ______ cells do not. Some people lack conical cells responding to certain colours. These persons cannot recognize those colours or cannot distinguish between different ______. These persons are said to be ______.

Write the Kepler's laws.

Complete flow chart given below.

Answer the question:

What is meant by satellite launch vehicles? Explain a satellite launch vehicle developed by ISRO with the help of a schematic diagram.

Explain the following temperature vs time graph.

Observe the given chart and answer the questions given below.

1. Which elements are in the same row?
2. Which elements have the same column?
3. Which elements are in the 18th column?
4. Which element is more reactive among A and C?
5. Which of the following elements A or B will form compounds?