Explore topic-wise InterviewSolutions in Current Affairs.

When the resources are limited then 

A - Less 

B - More

When the resources are unlimited then 

A & B both equally grow 

The principle followed in this is the Gause Competitive exclusions. 

(i) In this reaction, sodium (Na) is changed into sodium oxide (Na₂O). This is the addition of oxygen to sodittm. Since addition of oxygen is called oxidation, therefore, the substance sodium (Na) is oxidised. 

Oxygen (O₂) is changed into Na₂O. Here, the addition of metal to oxygen takes place. So, the substance reduced is oxygen.
(ii) Here, copper oxide is reduced to copper metal whereas hydrogen is oxidised to water.

The first reaction is a double displacement reaction whereas second reaction is a single displacement reaction.

Reaction (i) will take place. This is because Fe (iron) is more reactive than Cu (copper) and so it can displace Cu from its compound (CuSO₄). On the other hand, copper (Cu) cannot displace iron (Fe), so reaction (ii) will not take place.

This is done in order to cut off light because hydrogen peroxide decomposes into water and oxygen in the presence of light.

(i) Combination reaction

(ii) Displacement  reaction

(iii) Decomposition reaction

(iv) Double displacement reaction

(l) Combination reaction
(ii) Double displacement reaction
(iii) Decomposition reaction

Catalyst changes (usually increases but sometimes decreases) the rate of a chemical reaction with our itself being consumed in the reaction.

(i) Pb(NO₃)₂(aq) + H₂SO₄(aq)-----> PbSO₄(s) + 2HNO₂(aq)
(ii) 3Mg(s) + N₂(g) -------> Mg3N₂(s)
(iii) 2AI(s) + 6HCI(aq)--------> 2AlCI₃(aq) + 3H₂(S)

Man and sparrow etc.

We know that E_n \(=\frac{-13.6\,z^2lV}{n^2}\)

n = 2

z = 1 for first order

n = 2 level

E_n \(=\frac{-13.6\times1}4\;lV\)

E_n = -3.4 lV

The paddle wheel rotates wherever you keep inside a crooks tube.many are confusing with it.

More than 70 percent of the world's cobalt is produced in the Democratic Republic of the Congo (DRC), and 15 to 30 percent of the Congolese cobalt is produced by artisanal and small-scale mining (ASM).

Reactions in phases that easily mix, such as gases and liquids, occur much faster than reactions between solids. The extent of mixing of the reactants influences the frequency of molecular collisions - if reactants are more thoroughly mixed, the molecules will collide more often and thus react faster.

A chemical reaction is described by a chemical equation, an expression that gives the identities and quantities of the substances involved in a reaction. A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow.

Photo in Photosynthesis refers to LIGHT [Sunlight]

Complete photosynthesis means, Sinthesis of food in the presence of light [Sunlight]

Answer: redox reaction

Given

L = 3H

i = 2A

Energy stored in coil U = 1/2 Li²

= 1/2 x 3 x (2)²

= 1/2 x 3 x 4

U = 6 J

The answer is (b)

The percentage of water absorbed by raisins is calculated by using the formula

W₂-W₁/W₁ x 100

where W₂ is the weight of wet raisin and W₁ is the weight of dry raisin.

Speaking is not a motor development.

The selection of clothes are affected personality, age and profession.   

The roots developed from other than radicle parts.

It is the fruit formed without fertilization of the ovary.

Animal stain are caused by Milk, Blood and curd.  

1. Growth Hormone 

2. Prolactin 

3. Thyroid Stimulating Hormone 

4. Adreno Corticotropic Hormone 

5. Luteinizing Hormone 

6. Follicle Stimulating Hormone 

7. Melanocyte Stimulating Hormone

Collenchyma.

1. Central Nervous System 

a) Brain 

b) Spinal cord 

2. peripheral Nervous System 

a) Somatic Nervous System 

b) Autonomic Nervous System 

i) Sympathetic 

ii) Parasympathetic 

• Fore limbs are modified into wings 
• Bones pneumatic

1. Sucrase 

2. Maltase 

3. Lactase

• Phycobiont – Algal component 
• Mycobiont – Fungal component.

The metacentric chromosome has middle centromere forming two equal arms. 

Definition-A Sigmoid Curve is obtained when percentage saturation of Hemoglobin with oxygen is plotted against the partial pressure of oxygen.

Significance- It is useful in studying the effect of factors like partial pressure Of carbon dioxide, proton concentration on binding of oxygen with Hemoglobin.

Rhizobium  .

1. Reduction division:

It occurs in diploid cells to form 4 haploid cells, ie, the Chromosome number reduced to half in Meiosis I and results 2 daughter cells, which again divides to form 4 daughter cells. All cells formed in meiosis are haploid.

2. Equational division: 

It is the mitotic division results 2 daughter cells carrying same set of chromosomes as that of parent cell. No genetic variation occurs.

The metacentric chromosome has a centromere in the middle region with two equal arms of the chromosome.

Group of individual organisms with fundamental similarities.

The diffusion of water across a differentially or semipermeable membrane. 

It keeps the chromosome number constant. It occurs in somatic cells.

The pattern of arrangement of leaves on the stem or branch.

A group of cells having common origin and performing common function.

Since chromosome number remains constant from parent cell to daughter cell 

Series of ribosomes attached to single mRNA to form a chain.

Correct answer is b) 40-45% 

Correct answer is b) Fungus 

Correct option is C. concave lens of focal length -25 cm

P = -4 D

P = 100/f(cm 

f(cm) = 100/p

100/−4 = -25 cm.

Negative focal length means concave lens. Concave lens of focal length -25 cm.

Correct option is D. Shark, dog fish, sting ray

Correct option is B. They selectively filter toxic substances through their leaves.