Explore topic-wise InterviewSolutions in Current Affairs.

(c) SnCl₄. 5H₂O

HgO compound gives O₂ on moderate heating.

(a) Calcium carbonate 

The anhydride of nitrous acid is N₂O₃ .

(d) All the above

Meta phosphoric acid (E) can be prepared by heating D & F.

(d) S + O₂ → SO₂

(C) Arsenic (Z = 33)

[Ar]3d¹⁰4s² 4p³

(B) Siderite 

Siderite is FeCO₃.

The thebesian veins are most abundant in the right atrium and least in the left ventricle. Thebesian veins draining into the left heart, along with deoxygenated blood originating from the bronchial veins draining into the pulmonary veins, contribute to normal physiologic shunting of blood.

1. There are large deposits of different minerals occur in this area.

2. Iron ore, coal, manganese, bauxite, limestone, etc. are found.

C. Computer Aided Design

Full form of CAD is Computer Aided Design.

Anxiety: Anxiety is a feeling of fear, dread, and uneasiness. It might cause to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress.

Managing anxiety during exam

Many students freeze during exams and get depressed. Here are a few strategies to reduce examination pressure:

• Maintain a healthy life: Continue to get adequate sleep, exercise, and healthy food during exam time. Avoid substances that increase anxiety:  caffeine, sugar, nicotine, and cannabis.
• Get accurate information: Know what to expect when you arrive at the exam – format of questions, what material the exam will cover, and how much it is worth, etc.
• Study effectively: Spread your studying over the whole term rather than “cramming.”  Feeling that you don’t have enough time to cover everything increases anxiety. Reduce anxiety by being well prepared.
• Prepare to write the exam: Think about what commonly distracts you during exams (e.g.: frequent clock-watching, noise from other students, etc.) and develop strategies in advance for dealing with these distractions.
• Adjust your attitude: Maintain an attitude of doing the best you can under the circumstances, rather than requiring perfection from yourself.

Conclusion: Anxiety can be normal in stressful situations such as public speaking or taking a test. Anxiety is only an indicator of underlying disease when feelings become excessive, all-consuming, and interfere with daily living. It can easily be reduced by proper strategy. Too much thinking about the problem causes more stress. Hence, option (2) is the correct explanation to the question.

Emotionally and socially fit students:

• Display self-control: Emotionally and socially fit students are able to manage their anger as well as joy. In adverse situations, they remain calm and controlled and in a happy situation, they will share their happiness with others.
• Express feeling in words: Whatever they feel for others or whatever is the situation, such kids try to express themselves openly.
• Take pride in accomplishment: In every accomplishment, whether it is success or failure, they accept this with pride without feeling jealous or competitive with others.
• Ask for help when needed: In need without any doubt, they will ask for help from their peers, teachers, and parents. Instead of hiding any adverse situation, such kids like to share with others and believe in getting their help.
• Shows affection to familiar people: They love the people around them. Those people may be their parents, family members, peers, teachers, etc.
• Aware of others' feeling: They always respect the feelings of others. They will neither shy away from expressing themselves nor do they disrespect others' feelings.

Conclusion: A socially and emotionally healthy child will always respect others, have self-control, takes pride in his/her accomplishment, and love all those people whom they know. Hence, option (4) is not the characteristic of a socially and emotionally healthy child.

C. Pusa Arpita

The following marigold variety belongs to French Group is Pusa Arpita.

Extinction of response:

 In psychology, extinction refers to the gradual weakening of a conditioned response that results in the behavior decreasing or disappearing. In other words, the conditioned behavior eventually stops. 

Cause of extinction:

In classical conditioning, when a conditioned stimulus is presented alone without an unconditioned stimulus, the conditioned response will eventually cease.

In operant conditioning, extinction occurs when a response is no longer reinforced following a discriminative stimulus.

• Continuous reinforcement: Continuous reinforcement is a method of reinforcing behavior in an effort to increase or decrease a particular behavior's frequency. It is part of a method of learning known as operant conditioning. In continuous schedules, reinforcement is provided every single time after the desired behavior. We have come to expect our behavior to be reinforced every time it is performed and quickly grow discouraged if it is not.
• Partial reinforcement: Unlike continuous schedules, partial schedules only reinforce the desired behavior occasionally rather than all the time. This leads to slower learning since it is initially more difficult to make the association between behavior and reinforcement. However, partial schedules also produce behavior that is more resistant to extinction. 

A. Dieffenbachia

Indoor plant propagated through nodal/cane stem cuttings is Dieffenbachia.

Wheat is the plant of Temperate type of climate.

Kodarma is famous for Mica.

Kochi ports of India is located on Malabar coast.

Given:

The given number = 59319

Concept:

Calculation skills trick

Calculation:

Step(1):

First, we will take the digit at the unit’s place.

At the unit place, we have 9.

Step(2):

Now consider the cube table, the cube of which number has 9 as at the unit digit place.

We see, 9 x 9 x 9 = 729.

Step(3):

That means the cube root of 59319 will have 9 at the unit place.

Step(4):

Now ignore the last 3 digits of 59319, i.e. 319

Step(5):

Taking 59 as a reference number, we can see from the cubes table 59 lies between cubes of 3 and 4.

Step(6): Here, we choose the lower number i.e. 3

∴ We get the two digit of the answer

∴ Cube root of 59319 = 39  

Because adventitious buds arise from the notches present at the margins of of leaves.

Given:

The given number = 438976

Concept:

Calculation skills trick

Calculation:

Step(1):

First, we will take the digit at the unit’s place.

At the unit place, we have 6.

Step(2):

Now consider the cube table, the cube of which number has 6 as at the unit digit place.

We see, 6 x 6 x 6 = 216.

Step(3):

That means the cube root of 438976 will have 6 at the unit place.

Step(4):

Now ignore the last 3 digits of 438976, i.e. 976

Step(5):

Taking 438 as a reference number, we can see from the cubes table 438 lies between cubes of 7 and 8.

Step(6): Here, we choose the lower number i.e. 7

∴ We get the two digit of the answer

∴ Cube root of 483976 = 76  

Concept used:-

Trick for writing cube of a number.

Method & Calculation:-

• Write the cube of 5 & 1 in three digit form i.e. (125001)
• Now multiply all the digits within themselves i.e. (5 x 1) = 5
• Now multiply the result obtained from step (2) by 3 i.e. 5 x 3 = 15
• Now multiply 15 and 51 i.e. 15 x 51 = 765
• Now keep the unit digit vacant and add 125001 & 765 i.e. 125001 + 765_ = 132651

Manufacturing Business is one that coverts raw materials into finished products to meet the demands of the customer. In this form of business, the finished product can be directly sold to the customer. A factory that produces purified packaged drinking water is an example of manufacturing business. 

Trading Business does not manufacture a good or product but only facilitates the act of bringing the finished goods from the manufacturing unit to the buyer or customer. A pharmacy selling medicines produced or manufactured by different pharmaceutical companies is a trading business.

Concept used:-

Cube of a number near to base of hundred or tens.

Method and Calculation:-

 • Represent the cube as addition or subtraction from base of hundred or ten.

98³ = (100 - 2)³

 • Use identity (a - b)³ = a³ - b³ - 3ab (a - b)

(100 - 2)³ = 100³ - 2³ - 3 × 100 × 2 (100 - 2)

Bihar is the hinterland of Kolkata ports.

Concept used:-

Trick for writing cube of a number.

Method & Calculation:-

• Write the cube of 2 & 7 in three digit form i.e. (008343
• Now multiply all the digits within themselves i.e. (7 x 2) = 14
• Now multiply the result obtained from step (2) by 3. i.e. 14 x 3 = 42
• Now multiply 42 and 27 i.e. 42 x 27 = 1134
• Now keep the unit digit vacant and add 008343 & 1134 i.e. 008343 + 1134_ = 19683

In recent time Indian Airlines is known as of Indian name.

Given:

The given number = 13824

Concept:

Calculation skills trick

Calculation:

Step(1):

First, we will take the digit at the unit’s place.

At the unit place, we have 4.

Step(2):

Now consider the cube table, the cube of which number has 4 as at the unit digit place.

We see, 4 x 4 x 4 = 64.

Step(3):

That means the cube root of 13824 will have 4 at the unit place.

Step(4):

Now ignore the last 3 digits of 13824, i.e. 824

Step(5):

Taking 59 as a reference number, we can see from the cubes table 13 lies between cubes of 2 and 3.

Step(6): Here, we choose the lower number i.e. 2

∴ We get the two digit of the answer

∴ Cube root of 13824 = 24

Ecosystem Development is the important factor for sustainable development in Indira Gandhi Canal Area.

Correct option is A) Even though

Petrol is the raw material for Petro-Chemical industry.

Concept used:-

Trick for writing cube of a number.

Method & Calculation:-

• Write the cube of 6 & 4 in three digit form i.e. (216064)
• Now multiply all the digits within themselves i.e. (6 x 4) = 64
• Now multiply the result obtained from step (2) by 3 i.e. 64 x 3 = 192
• Now multiply 192 and 64 i.e. 192 x 64 = 1228
• Now keep the unit digit vacant and add 216064 & 12288 i.e. 216064 + 12288_ = 262144

Given:

The given number = 50653

Concept:

Calculation skills trick

Calculation:

Step(1):

First, we will take the digit at the unit’s place.

At the unit place, we have 3.

Step(2):

Now consider the cube table, the cube of which number has 3 as at the unit digit place.

We see, 7 x 7 x 7 = 343.

Step(3):

That means the cube root of 50653 will have 7 at the unit place.

Step(4):

Now ignore the last 3 digits of 50653, i.e. 653

Step(5):

Taking 50 as a reference number, we can see from the cubes table 50 lies between cubes of 3 and 4.

Step(6): Here, we choose the lower number i.e. 3

∴ We get the two digit of the answer

∴ Cube root of 50653 = 37  

About 80% of India’s coal reserves is of Bituminous type.

Service sector is included in:

• Tertiary Activities 
• Quaternary Activities
• Quinary Activities

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).