Government has made concerted efforts to ensure the increase in agricultural production since 1951.
(i) Abolition of Zamindari system.
(ii) Ceiling on landholdings where maximum limit towards ownership was fixed by government.
(iii) Consolidation of small landholdings into a large one where mechanisation is possible.
(iv) Introduction of any insurance to provide security against failure of crops.
(v) Opening up of rural banks and cooperative societies to provide credit to the farmers at a low interest.
(vi) Announcement of minimum support price to prevent any exploitation of farmers.
(vii) Special weather bulletins and agricultural programmes for farmers were introduced through mass media. <button aria-label="like this post" title="like this post">
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Common salt is obtained from sea-water by the process of evaporation. Sea water is trapped in large, shallow pools and allowed to stand there. The sun's heat evaporates the water slowly and common salt is left behind. This impure common salt obtained has impurities and is hence purified to obtain pure common salt by recrystallization.

Different individuals have different chances. Selection of variants by environmental factors forms the basis for evolutionary processes. These variations may lead to increased survival advantages of the individuals due to positive adoption of traits or may merely contribute to the genetic drift. Variants help the species to survive in all the conditions. Environmental conditions such as heat, light, pests, and food availability can change suddenly at only one place. If variants were not there, the entire species would have been destroyed.

False, the given pair of linear equations
x-2y-8=0
5x-10y=c

But if c = 40 (real value), then the ratio c₁/c₂ becomes  1/5 and then the system of linear equations has an infinitely many solutions.
Hence, ate = 40, the system of linear equations does not have a unique solution.

(1) As the news of Jallianwala Bagh spread, crowd took to the streets in many north Indian towns. (2) There were strikes, clashes with the police. (3) Attacks on government buildings were reported. (4) The government responded with byutai repression, seeking to humiliate and terrorise people. (5) Since Dyer later himself declared that his object was to ‘produce a moral effect’, to create in the minds of satyagrahis a feeling of terror and awe. (6) This gruesome tragedy earned wide-spread hatred among masses toward Britishers. (7) It dissiminated the discontentment and gave rise to country-wide movement.

Mrs Pumphrey is worried about Tricki because he is unwell. He has refused to eat food and had bouts of vomiting. She feels that he is suffering from a serious health issue such as malnutrition.

• In Mendeleev’s periodic table, the noble elements were not included in the table as they were not discovered at that time.

In Modern periodic table, the noble elements were placed in group 18 as a last and separated group.

• In Mendeleev’s periodic table, elements with larger atomic weights were placed before elements with smaller atomic weight without any justified reason.

In modern periodic table, all were arranged systematically with increasing atomic number and weight too.

• In Mendeleev’s periodic table, some different elements were grouped together while some similar elements were placed in different groups. Ex: alkali metals like Li , Na, K were placed with coinage metals Cu, Ag, Au etc.

In Modern periodic table there was no such confusion, the coinage metals have their own position in d-block and alkali metals are placed in s-block elements.

• In Mendeleev’s periodic table, the isotopes were placed in different positions.

In Modern periodic table, the isotopes were assigned same position as they have same atomic number.

• In Mendeleev’s periodic table, elements namely Fe, Co, Ni were placed together in Group VIII.

In Modern periodic table, these elements were placed under d-block elements in different groups.

The Internet is a worldwide system of computer. networks, i.e. network of networks. Through Internet, computers become able to exchange information with each other and find diverse perspective on issues from a global audience.

Construction Procedure:

1. Draw a line segment BC with the measure of 8 cm.

2. Now draw the perpendicular bisector of the line segment BC and intersect at the point D

3. Take the point D as centre and draw an arc with the radius of 4 cm which intersect the perpendicular bisector at the point A

4. Now join the lines AB and AC and the triangle is the required triangle.

5. Draw a ray BX which makes an acute angle with the line BC on the side opposite to the vertex A.

6. Locate the 3 points B₁, B₂ and B₃ on the ray BX such that BB₁ = B₁B₂ = B₂B₃

7. Join the points B₂C and draw a line from B₃ which is parallel to the line B₂C where it intersects the extended line segment BC at point C’.

8. Now, draw a line from C’ the extended line segment AC at A’ which is parallel to the line AC and it intersects to make a triangle.

9. Therefore, ΔA’BC’ is the required triangle.

Justification:

The construction of the given problem can be justified by proving that

A’B = (3/2)AB

BC’ = (3/2)BC

A’C’= (3/2)AC

From the construction, we get A’C’ || AC

∴ ∠ A’C’B = ∠ACB (Corresponding angles)

In ΔA’BC’ and ΔABC,

∠B = ∠B (common)

∠A’BC’ = ∠ACB

∴ ΔA’BC’ ∼ ΔABC (From AA similarity criterion)

Therefore, A’B/AB = BC’/BC= A’C’/AC

Since the corresponding sides of the similar triangle are in the same ratio, it becomes

A’B/AB = BC’/BC= A’C’/AC = 3/2

Hence, justified.

5. Draw a triangle ABC with side BC = 6 cm, AB = 5 cm and ∠ABC = 60°. Then construct a triangle whose sides are 3/4 of the corresponding sides of the triangle ABC.

Construction Procedure:

1. Draw a ΔABC with base side BC = 6 cm, and AB = 5 cm and ∠ABC = 60°.

2. Draw a ray BX which makes an acute angle with BC on the opposite side of vertex A.

3. Locate 4 points (as 4 is greater in 3 and 4), such as B1, B2, B3, B4, on line segment BX.

4. Join the points B4C and also draw a line through B3, parallel to B4C intersecting the line segment BC at C’.

5. Draw a line through C’ parallel to the line AC which intersects the line AB at A’.

6. Therefore, ΔA’BC’ is the required triangle.

Justification:

The construction of the given problem can be justified by proving that

Since the scale factor is 3/4 , we need to prove

A’B = (3/4)AB

BC’ = (3/4)BC

A’C’= (3/4)AC

From the construction, we get A’C’ || AC

In ΔA’BC’ and ΔABC,

∴ ∠ A’C’B = ∠ACB (Corresponding angles)

∠B = ∠B (common)

∴ ΔA’BC’ ∼ ΔABC (From AA similarity criterion)

Since the corresponding sides of the similar triangle are in the same ratio, it becomes

Therefore, A’B/AB = BC’/BC= A’C’/AC

So, it becomes A’B/AB = BC’/BC= A’C’/AC = 3/4

Hence, justified.

6. Draw a triangle ABC with side BC = 7 cm, ∠ B = 45°, ∠ A = 105°. Then, construct a triangle whose sides are 4/3 times the corresponding sides of ∆ ABC.

To find ∠C:

Given:

∠B = 45°, ∠A = 105°

We know that,

Sum of all interior angles in a triangle is 180°.

∠A+∠B +∠C = 180°

105°+45°+∠C = 180°

∠C = 180° − 150°

∠C = 30°

So, from the property of triangle, we get ∠C = 30°

Construction Procedure:

The required triangle can be drawn as follows.

1. Draw a ΔABC with side measures of base BC = 7 cm, ∠B = 45°, and ∠C = 30°.

2. Draw a ray BX makes an acute angle with BC on the opposite side of vertex A.

3. Locate 4 points (as 4 is greater in 4 and 3), such as B1, B2, B3, B4, on the ray BX.

4. Join the points B3C.

5. Draw a line through B4 parallel to B3C which intersects the extended line BC at C’.

6. Through C’, draw a line parallel to the line AC that intersects the extended line segment at C’.

7. Therefore, ΔA’BC’ is the required triangle.

Justification:

The construction of the given problem can be justified by proving that

Since the scale factor is 4/3, we need to prove

A’B = (4/3)AB

BC’ = (4/3)BC

A’C’= (4/3)AC

From the construction, we get A’C’ || AC

In ΔA’BC’ and ΔABC,

∴ ∠A’C’B = ∠ACB (Corresponding angles)

∠B = ∠B (common)

∴ ΔA’BC’ ∼ ΔABC (From AA similarity criterion)

Since the corresponding sides of the similar triangle are in the same ratio, it becomes

Therefore, A’B/AB = BC’/BC= A’C’/AC

So, it becomes A’B/AB = BC’/BC= A’C’/AC = 4/3

Hence, justified.

7. Draw a right triangle in which the sides (other than hypotenuse) are of lengths 4 cm and 3 cm. Then construct another triangle whose sides are 5/3 times the corresponding sides of the given triangle.

Given:

The sides other than hypotenuse are of lengths 4cm and 3cm. It defines that the sides are perpendicular to each other

Construction Procedure:

The required triangle can be drawn as follows.

1. Draw a line segment BC =3 cm.

2. Now measure and draw ∠= 90°

3. Take B as centre and draw an arc with the radius of 4 cm and intersects the ray at the point B.

4. Now, join the lines AC and the triangle ABC is the required triangle.

5. Draw a ray BX makes an acute angle with BC on the opposite side of vertex A.

6. Locate 5 such as B1, B2, B3, B4, on the ray BX such that such that BB₁ = B₁B₂ = B₂B₃= B₃B₄ = B₄B₅

7. Join the points B3C.

8. Draw a line through B5 parallel to B3C which intersects the extended line BC at C’.

9. Through C’, draw a line parallel to the line AC that intersects the extended line AB at A’.

10. Therefore, ΔA’BC’ is the required triangle.

Justification:

The construction of the given problem can be justified by proving that

Since the scale factor is 5/3, we need to prove

A’B = (5/3)AB

BC’ = (5/3)BC

A’C’= (5/3)AC

From the construction, we get A’C’ || AC

In ΔA’BC’ and ΔABC,

∴ ∠ A’C’B = ∠ACB (Corresponding angles)

∠B = ∠B (common)

∴ ΔA’BC’ ∼ ΔABC (From AA similarity criterion)

Since the corresponding sides of the similar triangle are in the same ratio, it becomes

Therefore, A’B/AB = BC’/BC= A’C’/AC

So, it becomes A’B/AB = BC’/BC= A’C’/AC = 5/3

Hence, justified.

संसाधन

• हमारे पर्यावरण में उपलब्ध प्रत्येक वस्तु जो हमारी आवश्यकताओं को पूरा करने में उपयोग की जाती है और जिसको बनाने के लिए तकनीक उपलब्ध है, जो आर्थिक रूप से संभाव्य तथा सांस्कृतिक रूप से मान्य है, एक संसाधन कहलाता है।

संसाधनों का वर्गीकरण

• संसाधनों का वर्गीकरण इस प्रकार किया जा सकता है-
→ उत्पत्ति के आधार पर- जैव संसाधन, अजैव संसाधन

→ समाप्यता के आधार पर - नवीकरणीय संसाधन, अनवीकरणीय संसाधन

→ स्वामित्व के आधार पर - व्यक्तिगत संसाधन, सामुदायिक स्वामित्व वाले संसाधन, राष्ट्रीय संसाधन

→ विकास के स्तर के आधार पर- संभावी संसाधन, विकसित संसाधन, भंडार, संचित कोष

अधिक के लिए दिए गए लिंक पर क्लिक करें:

Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime (Ca(OH)₂).

Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O

Because he did not eat food .

The young seagull was very hungry. It was this hunger that ultimately compelled it to fly. Its hunger intensified when it saw its mother tearing at a piece of fish that lay at her feet. It cried to her, begging her to get some food. When its mother came towards it with food in her beak, it screamed with joy and anticipation. However, she stopped midway. It wondered why she did not come nearer. Not being able to resist or control fits of hunger any longer, it dived at the food in its mother’s beak. At that moment, his hunger overpowered his fear of the great expanse of sea beneath the cliff. Finally, this plunge was followed by the natural reaction of its body, i.e. to fly.

A word processor is software or a device that allows users to create, edit, and print documents. It enables you to write text, store it electronically, display it on a screen, modify it by entering commands and characters from the keyboard, and print it.