English Medium इयत्ता १० - CBSE Important Questions

Why are alloys commonly used in electrical heating devices? Give reason.

The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are as given below:

Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor.

State Fleming's left hand rule.

Explain the function of the following parts of an electric motor.

Armature 

Explain the function of the following parts of an electric motor.

Brushes

Explain the function of the following parts of an electric motor.

Split ring

Students in a school listened to the news read in the morning assembly that the mountain of garbage in Delhi suddenly exploded and various vehicles got buried under it. Several people were also injured and there was traffic jam all around. In the brain storming session the teacher also discussed this issue and asked the students to find out a solution to the problem of garbage. Finally they arrived at two main points -one is self management of the garbage we produce and the second is to generate less garbage at individual level.

1) Suggest two measures to manage the garbage we produce.

2) As an individual, what can we do to generate the least garbage? Give two points.

3) List two values the teacher instilled in his student in this episode.

Students in a school listened to the news read in the morning assembly that the mountain of garbage in Delhi suddenly exploded and various vehicles got buried under it. Several people were also injured and there was traffic jam all around. In the brain storming session the teacher also discussed this issue and asked the students to find out a solution to the problem of garbage. Finally they arrived at two main points -one is self management of the garbage we produce and the second is to generate less garbage at individual level.

1) Suggest two measures to manage the garbage we produce.

2) As an individual, what can we do to generate the least garbage? Give two points.

3) List two values the teacher instilled in his student in this episode.

What is a dam? Why do we seek to build large dams? While building large dams, which three main problems should particularly be addressed to maintain peace among local people? Mention them.

Both soap and detergent are some type of salts. What is the difference between them?

Describe in brief the cleansing action of soap.

Write the name and structure of a saturated compound in which the carbon atoms are arranged in a ring. Give the number of single bonds present in this compound.

State modern periodic law.

"The sex of a newborn child is a matter of chance and none of the parents may be considered responsible for it". Draw a flow chart showing determination of sex of a newborn to justify this statement.

Write the function of the following part of the human eye:- iris

What is a rainbow? Draw a labelled diagram to show the formation of a rainbow.

पद्य खंड पर आधारित निम्नलिखित प्रश्न का उत्तर लगभग 60 शब्दों में दीजिए:

'तोप' कविता के आधार पर 'तोप' और 'गौरेया' की प्रतीकात्मकता स्पष्ट करते हुए बताइए कि इस कविता के माध्यम से कवि क्या संदेश देना चाहता है?

Two tangents TP and TQ are drawn to a circle with centre O from an external point T. Prove that ∠PTQ = 2∠OPQ.

Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line segments joining the points of contact to the centre.