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‘x’ indicates that this value is a single character and can be stored by a variable having the data type as char. Whereas, “x” indicates that even though it’s a single character, but it is going to be stored in the variable having data type as String.

Correct option  (i)  List

Byte code is the compiled format for Java programs. Once a Java program has been converted to byte code, it can be executed by Java Virtual Machines (JVM).

(i)  Day={1:’monday’,2:’tuesday’,3:’wednesday’}

Repeatation of statement/s finite number of times is known as Iteration.

class CONTAINER

{

float Radius, Height, Volume;

int Type;

void Cal Volume()

{

if(Type ==1)

Volume = 3.14* Radius * Height;

else if (Type =2)

Volume = 3.14* Radius * Height/3;

else

Volume =0;

}

public;

void GetValues()

{

cout<<"\n Enter the Radius"; cin>>Radius;

cout<<"\n Enter the Height"; cin>>Height;

cout<<"\n Enter the Type (1 for Cone, 2 for Cylinder)";

cin>>>Type;

CalVolume();

}

void ShowAll()

{

cout<<"\n Radius :"<<Radius;

cout<<"\n Height:"<<Height;

cout<<"\n Type :"< cout<<"\n Volume:"<<Volume;

}

};

(ii)  30#40#50# Maximum value FROM,TO is (3,4)

Possible Outputs:

(ii) and (iii)

Maximum value of N is 2.

Minimum value of N is 0.

Maximum value of M is 3.

Minimum value of M is 0.

Output 

22#40#9#13# 

class Box

{

int BoxNumber; 

float Side, Area: 

void ExecArea()

{

Area = Side*Side;

}

public:

voidGetBox()

{ cout>BoxNumber; cin>>Side; ExecArea();

}

void ShowBox()

{

{

cout<<"BoxNumber: "<<BoxNumber<<end1;

cout<<"Side:"<<Side<<end1;

cout<<"Area:"<<Area;

}

};

(i) BOD refers to the amount of oxygen consumed if all the organic matter in one liter of water were oxidised by bacteria. Thus, greater the BOD, lesser will be the dissolved oxygen in sewage discharge. 

(ii) Effects on aquatic life: 

(a) High BOD causes high mortality rate among aquatic animals. 

(b) The excessive nutrients facilitate algal growth causing algal bloom.

Innate immunity is present at the time of birth in humans. It is accomplished by providing different types of barriers. 

(a) Physical barriers: These barriers do not allow pathogens and foreign agents to enter the body, e.g., skin, mucous membranes of digestive, respiratory and urinogenital tracts trapping microorganisms. 

(b) Physiological barriers: Sweat, tears, acid in the stomach and saliva prevent microbial growth. 

(c) Cellular barriers: WBCs (polymorphonuclear leukocytes and monocytes, natural killer lymphocytes) and macrophages phagocytose and destroy microbes. 

(d) Cytokine barriers: Interferons produced by virus-infected cells protect non-infected cells from further viral infection.

Dissociation can be viewed as severance of the connections between ideas and emotions. It involves feelings of unreality, estrangement, depersonalization and sometimes a loss or shift of identity. It also includes sudden temporary alterations that blot out painful experience. The Types are:

Dissociative amnesia: 

Dissociative fugue:

Dissociative identity disorder: 

Depersonalization: 

Behaviour therapies postulate that psychological distress arises because of faulty behaviour patterns or thought patterns. Systematic desensitization is a behavior therapy technique. Systematic desensitization is a technique introduced by Wolpe for treating phobias or irrational fears. The client is interviewed to elicit fear-provoking situations and together with the client, the therapist prepares a hierarchy of anxiety-provoking stimuli with the least anxiety-provoking stimuli at the bottom of the hierarchy. The therapist relaxes the client and asks the client to think about the least anxiety- provoking situation. The client is asked to stop thinking of the fearful situation if the slightest tension is felt. Over sessions, the client is able to imagine more severe fear provoking situations while maintaining the relaxation. The client gets systematically desensitized to the fear.

It works on the principle of reciprocal inhibition.

Somatoform disorders are conditions in which there are physical symptoms in the absence of physical disease. The individual has psychological difficulties and complains of physical symptoms for which there are no biological cause. It includes the following: Pain disorder:

Hypochondriasis : 

Somatisation : 

Conversion : 

It was observed that individuals show better performance in the presence of others, than when they are performing the same task alone. For instance, cyclists racing with each other perform well than when they cycle alone. 

Better performance in the presence of others is because the person experiences arousal, which makes the person react in a more intense manner

The arousal is because the person feels she or he is being evaluated called evaluation apprehension.

The nature of the task to be performed also affects the performance in the presence of others. If the others present are also performing the same task, this is called a situation of co-action. In this situation, there is social comparison and competition. In short, task performance can be facilitated and improved, or inhibited and worsened by the presence of others

Health is a state of complete physical, mental and social well-being. 

Good health is maintained by balanced diet, personal hygiene and regular exercise, yoga, vaccination against infectious diseases, proper disposal of wastes, control of vectors, etc.

Each cycle of PCR requires two sets of primers. 

Role of Primers: Primers are complementary to the regions of DNA. They anneal to both the strands of DNA which are then extended using nucleotides. 

Role of DNA Polymerase: 

(i) The enzyme extends the primers using the nucleotides provided in the reaction and the genomic DNA as template. 

(ii) DNA polymerase used in PCR is thermostable and is called Taq polymerase. It is obtained from the bacterium Thermus aquaticus.

Skin colour is controlled by three genes; A,B,C dominant genes and a,b,c the recessive genes ; the effect of each type of allele is addictive ; more the dominant allele, darker the skin colour; more the recessive allele lighter the skin colour ; when three dominant alleles and three recessive alleles

are present in an individual the skin colour is intermediate 
- Polygenic inheritance
- Human Height /or any other correct example

DNA dependent RNA polymerase ; binds to the promoter site ( of DNA) ; to initiate transcription; it uses nucleoside triphosphate / nucleotides as substrates; polymerises in a template dependant fashion; following the rule of complementarity. 

DNA dependent  RNA polymerase is only capable of catalysing elongation process; it associates temporarily with initiation factor (o) / to initiate transcription ; and with termination factor (p)to terminate transcription, once the polymerase reaches terminator region the nascent RNA falls off so also the RNA polymerase from DNA template thus completing transcription

In Liquid nitrogen ( - 196^oC) / cryopreservation

Monoecious- bisexual condition of a plant / when both male and female flowers are on the same plant , e.g coconut palm /cucurbits / or any other correct example  Dioecious -unisexual conditon of a plant / male and female flowers present on different plants , eg- Papaya / date palm / or any other correct example

(a) 0.65 = 65/100 x 100% = 65%

(b) 2.1 = 21/10 x 100% = 210%

(c) 0.02 = 2/100 x 100% = 2%

(d) 12.35 = 1235/100 x 100% = 1235% 

Converse : If x is an odd number, then x is prime. 

Contrapositive : If x is not an odd number then x is not prime.

a₁₁ = -25

Detailed Answer:

27, 23, 19, .........., -65

d = a₂ - a₁ = 23 -27 = -4

We are taking 11th term from the last we will take d = 4 and a₁ = -65

Now,

a₁₁ = a₁ + (11 -1)d

= -65 + 10(4)

= -65 + 40

= -25

Sine the given point (-2,5) is the nearest to the y - axis. 

So, (- 2,5) will be perpendicular on y - axis. Hence, the required point on y - axis be (0, 5).

Let one of the two equal complementary angles be x.

x + x = 90^o

2x = 90^o

x = 90^o/2

x = 45^o

Thus, 45 is equal to its complement.

(a) 18 x [7 + (–3)] = [18 x 7] + [18 x (–3)] 

⇒ 18 x 4 = 126 + (–54) 

⇒ 72 = 72 

⇒ L.H.S. = R.H.S. Hence verified.

(b)(–21) x [(–4) + (–6)] = [(–21) x (–4)] + [(–21) x (–6)] 

⇒ (–21) x (–10) = 84 + 126 

⇒ 210 = 210 

⇒ L.H.S. = R.H.S. Hence verified.

(a) 3 x (–1) = –3

(b) (–1) x 225 = –225

(c) (–21) x (–30) = 630

(d) (–316) x (–1) = 316

(e) (–15) x 0 x (–18) = 0

(f) (–12) x (–11) x (10) = 132 x 10 = 1320

(g) 9 x (–3) x (–6) = 9 x 18 = 162

(h) (–18) x (–5) x (–4) = 90 x (–4) = –360

(i) (–1) x (–2) x (–3) x 4 = (–6 x 4) = –24 

 (j) (–3) x (–6) x (2) x (–1) = (–18) x (–2) = 36

(i) -1x  a = -a, where a is an integer.

(ii) (a) -1 x-22 = 22

(b) -1 x 37 = -37

(c)(-1) x 0 = 0

 (a) One such pair whose sum is -7 : 

-5 + (-2)=-7

(b) One such pair whose difference is -10 : 

-2-8=-10

(c) One such pair whose sum is 0: -5+5=0

(a) (-8) + (-4).......<.......(-8) -(-4)

(b) (-3) + 7 -(19)........<..........15 - 8 +(-9)

(c) 23 - 41 +11 .........>.........23-41-11

(d) 39+(-24) -(15)..........<.........36+(-52) - (-36)

(e) -231 + 79 +51 .........>..........-399 + 159 + 81

(a)  -2  - (-10) - 2 + 10 = 8 

(b) (-7)  + 2 = -5

(c) (-2) - 1 = - 2 - 1 = - 3

Team A scored -40,10, 0 

Total score of Team A = -40 + 10 + 0 = -30 Team B scored 10, 0, -40 

Total score of Team B = 10 + 0 + (-40) = 10 + 0 - 40 = -30

Anne was a very shy and introvert girl. She had friends but none with whom she could share her secrets. She never confided in any of them. On her thirteenth birthday, she was presented a red and white checkered diary by her parents. The diary played an important role throughout her life. The first sight of the diary had made Anne grow a liking to it and she started making entry of her deep thoughts and feelings into it. She gave it a name “Kitty” and in all her entries, she had referred to it as “Dear Kitty”. There was no aspect of her life which she had not mentioned in the diary. Whenever she found time, she “spent” it with the diary. She confided about the teenage- desires, her friends, her fears, her loneliness – in fact everything in the diary. She always felt a need of true friend, which she could confide everything. She found that true friend in her Kitty.

Any three postulates

Detailed Answer :

Three postulates of VSEPR Theory are given as below :

(i) The shape of the molecule is determined by repulsion between the electron pairs around the central atom.

(ii) The order of repulsion is

lp – lp > lp – bp > bp – bp

(iii) The electron pairs are oriented around central atom in such a way that repulsion is minimum.

Correct statement

Increases in a period

Decreases in a group.

Detailed Answer : 

Ionisation enthalpy is defined as the amount of energy required to remove the most loosely bound electron (valence e–) from an isolated gaseous atom.  I. E. increases along a period.  and decreases down the group.

UV radiation lead skin cancer.

Killing of many phytoplanktions.

Any two harmful effects

(i) Smaller Size

(ii) High electronegativity

(iii) High ionisation energy

Any two correct - reason.

(i) : O :: O :

(ii) H^.. C :: C^.. H

At constant temperature, the pressure of a gas fixed amount of gas inversely proportional to its volume 

PV = constant OR P ∝ 1/V OR P = k/V

Acetylene OR Ethyne

2- chlorobutane

ns² np^{1 – 6.}

Smaller in Size

Detailed Answer :

Li⁺ion has maximum degree of hydration due to small size and high charge density.

+6 OR Six

Detailed Answer :

In K₂MnO₄ oxidation state be (x)

K₂MnO₄ Oxidation state :

2 + x + 4(– 2) = 0

x = + 6

F^– OR Fluoride ion