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6.022x10²³ molecules of H₂O = 18g 

1 molecule of N₂= 18/6.022x10²³ = 2.99x10-²³g 

6.022x10²³ molecules of sucrose = 342g 

100 molecule of sucrose = 342/6.022X10²³ X 100 = 5.68x10-²⁰g

1 mole of Argon contains = 6.022x10²³ atoms 

52 mol of Argon contains = 6.022x10²³ x 52= 3.13 x 10²⁵atoms

4 u of Helium = 1 atom 52 u of Helium = 1/4 x 52 =13 atoms

4 g of Helium = 6.022 x 10²³ atoms 

52 g of Helium = 6.022X10²³ /4 x 52 

= 7.83 x 10²⁴ atoms.

1 moles of C₂H₆ contain = 6.022 x 10²³ molecules 

3 moles of C₂H₆ contain = 6.022 x 10²³ x 3 = 1.0807 x 10²⁴ molecules.

1 mole of C₂H₆ contain = 6 moles of hydrogen atom 

3 moles of C₂H₆ contain = 18 moles of hydrogen atom 

1 mole of C₂H₆ contain = 2 moles of carbon 

3 moles of C₂H₆ contain = 6 moles of carbon

(i) 1 mole of C₂H₆ contains 2 moles of Carbon atoms 

∴ 3 moles of of C₂H₆ will contain 6 moles of Carbon atoms 

(ii) 1 mole of C₂H₆ contains 6 moles of Hydrogen atoms 

∴ 3 moles of of C₂H₆ will contain 18 moles of Hydrogen atoms 

(iii) 1 mole of C₂H₆ contains Avogadro's no. 6.02x1023 molecules 

∴ 3 moles of of C₂H₆ will contain ethane molecule 

= 3x 6.02 x 10²³= 18.06 x10²³ molecules.

Organized sector: Refers to large-scale Industrial and agr1cultiral units with a defined pattern of production and employment.

Economic development: Sustained economic growth with Institutional changes refer to economic development.

Sikkim is the first state in India that is planning to shift completely to organic farming by 2015.

Uttarakhand too is following the same path of being 100%.

Source: The place something comes from or starts at, or cause of ‘something.

(c) (3x² + 4x – 7) and (2x² – 5x + 3

Let the two expressions be A and B. 

Then, A + B = 5x² – x – 4 .......…(i) A – B = x² + 9x – 10 …(ii)

Adding eqn (i) and (ii), we get 

2A = (5x² + x² ) + (–x + 9x) + (–4 – 10)

= 6x² + 8x –14

\(\Rightarrow\)A = 3x² + 4x – 7

\(\therefore\) From (i), B = (5x² – x – 4) – A 

= (5x² – x – 4) – (3x² + 4x – 7) 

= 2x² – 5x + 3

(c) \(-\frac{4}{3},\frac{11}{3}\)

\(\frac{5X+6}{(2+X)(1-X)}\) = \(\frac{a}{(2+X)}\) + \(\frac{b}{(1-X)}\)

\(\Rightarrow\) \(\frac{a(1-X)+b(2+X)}{(2+X)(1-X)}\) = \(\frac{5X+6}{(2+X)(1-X)}\)

\(\Rightarrow\)\(\frac{a-aX+2b+bX}{(2+X)(1-X)}\) = \(\frac{5X+6}{(2+X)(1-X)}\)

\(\Rightarrow\) \(\frac{(a+2b)-X(a-b)}{(2+X)(1-X)}\) = \(\frac{5X+6}{(2+X)(1-X)}\)

Equating the coefficient of x and constant term on both the sides of the equation, we get

a + 2b = 6   ......…(i)

a – b = –5 ...........(ii)

Subtracting eqn (ii) from eqn (i), we get

3b = 11

\(\Rightarrow\) b = \(\frac{11}{3}\)

Putting the value of b in (ii), we get

a - \(\frac{11}{3}\) = -5

\(\Rightarrow\)a = -5 + \(\frac{11}{3}\) = \(\frac{-15+11}{3}\) = \(-\frac{4}{3}\).

(c) –6 and 8

(x + 3)(y – 5) = xy + 39

\(\Rightarrow\) xy + 3y – 5x – 15 = xy + 39

\(\Rightarrow\) –5x + 3y = 54  5x – 3y = –54 ..........(i)

(x – 2) (y + 3) = xy – 40

\(\Rightarrow\) xy – 2y + 3x – 6 = xy – 40

\(\Rightarrow\) –2y + 3x = –34 \(\Rightarrow\) 3x – 2y = – 34 .............(ii)

Multiply (i) by 3 and (ii) by 5 and then subtract eqn (ii) from eqn (i). 

so that we get solution.

1. Gyri are the ridges in the folds present on the cerebral cortex. 

2. The number of folds increase the surface area of the cerebral cortex. 

3. Cerebral cortex has sensory and motor areas such as Wernicke’s area, Broca’s area, etc. If the surface area is greater, the neurons in these areas are also more in number. 

4. Greater the number of neurons greater is the intelligence. 

5. The number of gyri therefore is said to be related to the degree of intelligence.

The stages of light reaction are;

• Photoexcitation of chlorophyll
• Photolysis of water
• Photophosphorylation
• Reduction of NADP

Lack of iodine in our diet results in goitre. It is associated with hypothyroidism.

Hormone receptors present on the cell membrane of target cells are called membrane bound receptors or extracellular receptors.

cAMP and IP₃, Ca⁺⁺ etc., acts as second messenger in hormone action.

The Marwari.

Honey and wax.

Murrah and Mehsana.

Ginger and turmeric.

Yes, all eggs hatch into nestlings.

1. If i were in Ritwik’s place, I would like to show kindness towards the pigeon squab by keeping back the pigeon squab in the ventilator. He took great care towards it. 

2. Research their needs and do what makes them happiest. 

3. Check that we are not inadvertently supporting animal cruelty, which are in our surroundings. 

4. Leave room for wild life habitates in the own yard by providing birds with feeders and bird bath. 

5. Create a clean environment for the birds and animals. 

6. Cut the usage of plastic so they can not be danger to wild life. 

7. Appreciate wild life and learn more about it but do not approach them or attempt to resque them. 

8. Never tolerate birds or animal cruelty. Report suspected cruelty to the authorities. 

9. In still compasion in the children by demonstrating kindness and using positive training methods for the pets. 

10. Keep them vaccinations’ current and visit veterinarian regularly.

An increase in the blood pressure / blood volume in the atria, causes the release of ANF.

Catabolic Processes: In catabolic processes, complex compounds are disintegrated whereby simple compounds are produced. The energy produced during these processes is utilised in the accomplishment of various biological processes.

Anabolic processes: In anabolic processes, complex compounds are produced by the fusion or reaction of simple compounds. These complex compounds are essential for the organisation and formation of various structures of cells.

There are two types of circulatory system, found in animals. They are:

Open type circulation:

1. In this blood spreads out through large open spaces called sinuses, within the tissues of the body.

2. Body tissues are in direct contact with blood.

3. The volume of blood flowing in tissues cannot be regulated.

4. There is no heart.

For example Insects like grasshopper, cockroach etc.

Closed type Circulation:

1. The circulatory blood remains confined within the blood vessels at all times. It does not spread in open spaces.

2. Body tissues are not in direct contact with blood.

3. The volume of blood flowing through tissue or organ can be controlled by contraction and relaxation of muscles of arteries.

4. The heart is present, which works like a pumping station.

For example Earthworm, Man (Human beings)

The answer is (B) Open type

The answer is (B) incomplete cartilaginous ring

Apis dorsata.

Apisflorea is the little bee.

The nomadic tribes need to move from one place to another in search of new pastures. When the grass in a particular part is exhausted and the season becomes unconducive, the nomadic tribes move to some other area. The seasonal movement of nomadic tribes is beneficial for the environment. It allows natural re-growth of grass in the pastureland.

Correct option is (c) service department

Abstraction in OOP is “A model of a complex system that includes only the details essential to the perspective of the viewer of the system.”

Correct option is (D) difference between current assets and current liabilities.

It is the method of combining the data, attributes, and methods in the same entity is called encapsulation.

Correct option is (b) Interrelated Physiological, Psychological and Socio-ethical aspects of human being

In 1949, it made the Dutch forces to vacate Indonesia.

Working capital = Current assets – Current liabilities.

Current liabilities means such liabilities which are payable within the time period of 12 months.

From the current assets the stock and expenses paid in advance are deducted, the balancing figure is liquid assets.

“The relationship between two accounting figures expressed mathematically is known as ratios. To make qualitative judgments about firms’ financial performance ratios is useful.

Polymorphism is a Greek word that means Many Shapes. In OOP Polymorphism means the ability to take on many forms. The term is applied both to objects and to operations.

Correct option is (b) According to the behaviour of people at work

Generally 2: 1 proportion of current ratio is considered to be an ideal.