Explore topic-wise InterviewSolutions in Current Affairs.

i. Observed outer electronic configuration of europium (Eu) is 6s² 4f⁷ 5d⁰.

ii. In the observed electronic configuration of Eu, 4f subshell is half-filled which is a highly stable configuration. Therefore, observed electronic configuration of Eu varies than expected.

D) All the above

D) above all

One half of the distance between the centres of nucleus of the two adjacent atoms of a metallic crystal is called as a metallic radius.

Elements were classified on the basis of their physical properties before the knowledge of electronic structure of atom.

a. Li₂O is the most basic oxide.

b. CO₂ is the most acidic oxide.

c. Formula of an amphoteric oxide :

Al₂O₃. 

[Note : Both B₂O₃ and CO₂ are acidic oxides. But CO is more acidic oxide as compared to B₂O₃. Hence, CO₂ is most acidic oxide amongst the given.]

• In the case of nonmetals (except noble gases), the atoms of an element are bonded to each other by covalent bonds.
• Bond length of a single bond is taken as sum of radii of the two single bonded atoms. This is called covalent radius of the atom.
• For example: Bond length of C-C bond in diamond is 154 pm. Therefore, atomic radius of carbon is estimated to be 77 pm which is half of bond length (\(\frac{1}{2}\) × 154 = 77).

i. In a multi-electron atom, the electrons in the inner shells tend to prevent the attractive influence of the nucleus from reaching the outermost electron.

ii. Thus, they act as a screen or shield between the nuclear attraction and outermost or valence electrons. This effect of the inner electrons on the outer electrons is known as screening effect or shielding effect.

iii. Across a period, screening effect due to inner electrons remains the same as electrons are added to the same shell.

iv. Down the group, screening effect due to inner electrons increases as a new valence shell is added.

e.g. Potassium (19K) has electronic configuration 1s²2s²2p⁶3s²3p⁶4s¹.

K has 4 shells and thus, the valence shell electrons are effectively shielded by the electrons present in the inner three shells. 

As a result of this,

Valence shell electron (4s¹) in K experiences much less effective nuclear charge and can be easily removed.

The remaining rhyming words are:

Bachendripal was dreamt of flying in aeroplanes and meeting famous people. This amused her family.

When the first monster turned the smooth road into a vast stretch. Travelling first 300 miles on this land he thought that the task was becoming tough. At that moment, this feeling was going in his mind.

The old couple treated their guests with kind words and welcomed them heartily though they were in rags. They offered the milk they had with humble request, and they talked very politely with them. This shows the very good hospitality of the old couple.

1 – d

2 – f 

3 – e 

4 – b 

5 – c 

6 – a

1. Kargil

2. dabbled in art

3. in the air of

4. martyr

5. Casio

6. introvert

7. Sufism

8. Hema Aziz

9. Nafisuddin

Hanif had no friends till 14 years of age because of he wan a alone.

(B) Using a rain gauge

The absence of mother from home taught the children that one’s duty is the most important thing in life.

The life for Hanif was always ekdam bindas. He sketched very well, made beautiful cards out of waste materials, read books and loved playing the drums. As a young man, he was so talented and had an interest in life.

(B) Rain guage

a. loved the Lord

(B) Telangana

Hanif got training into the IMA.

(B) South West Monsoons

(A) March and June

People live him die, but continue to live forever in the hearts of patriots.

(a) 11 Rajputana Rigles

The South West Monsoon enter India in Kerala.

(d) Nanasing

He was posted at Jaipur and then at Saichan, just prior to the Kargil was of 1999.

One can only surmise from a flash card, found amongst his belongings, which simply said, “We change lives”.

The monsoons in India are of 2 kinds.

Streams are formed due to water flow from mountains

(B) November 1977

(C) South-East Monsoons

His family has started a school in kulu under the Hanif foundation.

His friends called him as khalifa.

(A) Return monsoon

(D) all the above

c. loved his fellow men

(D) all the above

The third place the family decided to reside in was a cave. They wished to shift there to create a place safe from the elements during the coming winter. The cave could also be a strong storage spot to protect themselves and their belongings.

Ganga river is the national and a huge river of India. At present, the degree of pollution in the river is constantly increasing, by which river water is becoming harmful! for human use. This polluted water is destroying the river ecosystem rapidly. The amount of toxic material dissolved in the water of the river was measured 6.8 - 7.2 MG / L. This amount is very high. In general, this quantity should be 4.0 MG /L..

Haridwar, Kanpur, Allahabad, Varanasi and Patna recorded the highest level of Ganga water pollution. Similarly, the presence of dissolved bio – organisms (BOD) was found to be very high from Kannauj to Varanasi. In Kanpur it was recorded to be around 16.39 mg / litre. This was recorded to be the lowest 3 mg / liter in the mountainous regions. Similarly, 15.58 MG / littre B.O.D was recorded in delta regions beyond Patna. The quantity of D.O and B.O.D. was found to be different before and after the monsoon.

Similarly, in Kannauj, Kanpur, Allahabad and Varanasi the presence of coliform was found to be the highest in river water. Due to the high D.O. And B.O.D. and coliform, the amount of / pollution was found to be more in river water.

Causes of pollution of Ganga river: Ganga river is being polluted due to many pollutants being mixed in this huge river. 

The causes of pollution of this river are:

1. Settlement of 2500 – 3000 cities is found on both sides of this river. Because of this, river water gets polluted due to massive human density. 

2. As the human urine and waste is directly introduced into the river through sewer lines, the river is polluted.

3. Its pollution is increasing due to improper disposal of various types of wastes. 

4. The work of agriculture and animal husbandry is done on both sides of this river. Water is polluted by this process also. 

5. The river’s water is polluted due to the waste from the industries which are found in the cities situated on the banks of this river. 

6. The process of cremation of dead bodies on the river banks is also polluting it. 

7. Pollution in the river has increased very rapidly due to the dumping of wastes from chemical, leather, fertilizer and other industries and sewage and wastes from the cities, in the Ganges river. This water cannot be used for bathing or drinking.

Prevention of Pollution of Ganga River: 

1. Ganga Action Plan is implemented smoothly and at a rapid pace. 

2. Increasing political and administrative will power and foresightedness. 

3. Corruption should be completely eliminated. 

4. Planting of trees should be promoted. 

5. There should be a proper arrangement for disposal of waste water, industrial wastes and solids. 

6. The sewage water should be introduced into the river after due process in sewage treatment plants. 

7. The process of dead bodies immersion should be stopped. 

8. There should be a proper arrangement for disposal of chemical substances and various chemicals emitted from industries. 

9. All people should take care not to pollute the Ganga, considering this to be their moral responsibility.

(A) poorest people

(D) all the above

(C) Both A & B

Causes of pollution of river and well water.

1. Mining of minerals. 

2. Chemicals released by factories. 

3. Overuse of chemical pesticides and fertilizers.

Preventive measures. 

1. Controlling of chemical waste from factories being let out into water bodies. 

2. Reduce the use of chemical fertilizers 

3. Waste material from mining should be disposed off properly etc.

(i) Don't go to the theatre if you don't want to. 

(ii) He'll post your letter if you want him to. 

(iii) Please use my pen if you want to. 

(iv) He'll lend you his umbrella if you want him to. 

(v) My neighbour, Ramesh, will take you to the doctor if you want him to. 

(vi) Don't eat it if you don't want to.

Today is Sunday. I'm wondering whether I should stay at home or go out. If I go out, I will miss the lovely Sunday lunch at home. If I stay for lunch, I will miss the Sunday film showing at Archana Theatre. I think I'll go out and see the film, only to avoid getting too fat.

Correct option is B. Flat organization

Correct option is C. Problem with the human resource| planning