Name the underlying principle of a generator. When was it discovered ?​

(क) कृषकाः केन क्षेत्राणि कर्षन्ति?

उत्तराणि :- कृषकाः हलेन कुदालेन च क्षेत्राणि कर्षन्ति।

(ख) केषां कर्मवीरत्वं न नश्यति ?

उत्तराणि :- कृषिकाणां कर्मवीरत्वं न नश्यति।

(ग) श्रमेण का सरसा भवति?

उत्तराणि :- श्रमेण पृथ्वी (धारित्री) सरसा भवति।

(घ) कृषकाः सर्वेभ्यः किं किं यच्छन्ति ?

उत्तराणि :- कृषकाः सर्वेभ्यः शाकम्, अन्नम्, दुग्धम्, फलम् च यच्छन्ति।

(ङ) कृषकात् दूरे किं तिष्ठति ?

(ङ) कृषकात् दूरे किं तिष्ठति ?उत्तराणि :- सुखम् कृषकात् दूरे तिष्ठति ।

HOPE THIS WILL HELP YOU...

Step-by-step explanation:

An animated GIF (Graphics Interchange Format) file is a graphic image on a Web page that moves - for example, a twirling icon or a banner with a hand that waves or letters that magically get larger.

Answer:

it's trajectory is right answer but there is no in this option but it is right answer

The path followed by anybody in projectile motion is Projectile.

• Projectile is a motion of the body which is parabolic in the path.
• Parabolic path occurs due to the force influenced on the body due to earth.
• It is occurred due to the launch of the particle at some angle.
• The motion has two features one is its covered height and the other is its range.
• The speed at which the body launches from the ground will remain the same when it touches the ground at the end of the path.

a)[tex]CH_{3}- C[/tex]≡CH + 2HBr → [tex]CH_{3}-C(Br)_{2}-CH_{3}[/tex]

• a) Propyne reacts with Hydrogen bromide to give  2 2-Dibromopropane. The addition of hydrogen bromide results in the formation of geminal halides.
• The reaction is as follows:

       [tex]CH_{3}- C[/tex]≡CH + 2HBr → [tex]CH_{3}-C(Br)_{2}-CH_{3}[/tex]

• b)To form acetophenone(1-phenylethane-1-one), benzene reacts with [tex]CH_{3}OCl[/tex] in the presence of aluminium chloride and hydrogen chloride.
• It is a type of direct reaction. Please refer to the attached image for the conversion.
• ii) The most widely used method to form chlorobenzene from Benzene is the electrophilic substitution reaction.
• Here, the electrophile( Chlorine) attacks the hydrogen atom on the benzene ring in the presence of Ferric chloride and substitutes it.
• HCl is formed as a by-product in the reaction.Please refer to the image for the chemical reaction.

Answer:

(a) Propyne is converted into 2,2-Dibromopropane using hydrogen bromide

(b) Benzene is converted into acetophenone using acyl chloride and lewis acid

(ii) Chlorobenzene is made from benzene by using chlorine gas and any lewis acid.

Explanation:

(a) Propyne will be converted to 2,2-Dibromopropane by adding two times HBr.

(b) Benzene is converted into acetophenone by using acyl chloride in the presence of any lewis acid.

(ii) Benzen is converted into chlorobenzene via electrophilic substitution method by adding chlorine gas in the presence of any lewis acid.