Explore topic-wise InterviewSolutions in Current Affairs.

Terrorism is a global problem and a challenge for any government.

The adverse effects of terrorism are as follows:

• It is an obstacle in the progress of every nation.
• Terrorism is an evil, lowly and violent process to disturb the peace, brotherhood and unity of a nation.
• Terrorism creates fear in the minds of people through violence and hatred.
• Terrorism is an inhuman act carried out by a certain group of people in a planned manner by resorting to bullying, killing or torturing innocent people.
• TerrorIsm is pure hatred and cruelty and has nothing to do with any religion. There have been terrorist attacks on the Parliament. the Taj Hotel and Akshardham. etc.
• Terrorist activities affect the trade and business of the region where the activities take place.
• Terrorists smuggle intoxicating drugs Into the country thus increasing black money in the country.
• Some terrorist organizations extort money from rich businessmen.
• Government buildings are destroyed in bomb blasts. Hence, there is a huge loss amounting to crores of rupees. The government has to spend crores of rupees for reconstructing these buildings or for their repairs.

Challenges related to sufficient water, housing, electricity communication, cleanliness, health and education arise in slum areas formed In cities. Other problems like anti-social activities, child labour, drug diction, consumption of alcohol, mental stress, etc. are the byproducts of growing
urbanization and unemployment.

Use of Literacy :

• Literacy is required to understand new ideas, discoveries and knowledge.
• An educated person can effectively communicate and explain his ideas, opinions, views and beliefs.
• At the time of independence, literacy rate was low but it has gone up since then.

Answer is D. 14.7 %

The increase in prices of essential commodities and other necessities is known as ‘inflation. Inflation has an adverse effect on people’s health and causes stress-related problems.

Answer is C. Poverty

Corruption, hoarding and population explosion, bribery and black marketing, etc. are the factors responsible for inflation.

The only way to face inflation is to practice thrift and spend sensibly by having a budget plan.

Answer is A. Global

The characteristics of terrorism are as follows :

• Terrorism is a global problem and a challenge for any government.
• It is an obstacle in the progress of every nation.
• Terrorism is an evil, lowly and violent process to disturb the peace, brotherhood and unity of a nation.
• Terrorism creates fear in the minds of people through violence and hatred.
• Terrorism is an inhuman act carried out by a certain group of people in a planned manner by resorting to bullying, killing or torturing innocent people.
• Terrorism is pure hatred and cruelty and has nothing to do with any religion.
• There have been terrorist attacks on the Parliament, the Taj Hotel and Akshardham, etc.

Measures to save ourselves from terrorism :

• Citizens must face terrorism with bravery and courage.
• The Intelligence Bureau should be strong and active.
• People should always be ready to cooperate with security forces.
• People should remain alert in public and crowded places.
• People should not pay attention to rumours.
• People shouldn’t panic.
• Security forces should be well-equipped with CCTV cameras and metal detectors.

Answer is D. Literacy

Answer is C. R.T.E.

In simple terms, ‘Corruption’ means lack of integrity and honesty or misuse of a position for dishonest gains.

Effects of Corruption :

• Violation of human rights.
• Hindrance to the development of the nation.
• Deterioration of moral values.
• Increase in inflation.
• Lack of trust in law and order.
• Encouragement to Nepotism.
• Slow human development and breach of faith.

1. Belgium is a small country in Europe.

2. 59% of population of Belgium lives in the Flemish region and speaks Dutch language.

3. 40% lives in the Wallonia region and speaks French.

4. One per cent of people speak German.

5. Brussels.

Fatly acids and glycerol are absorbed to the Lacteal of villus.

Correct Option (c) 1.28 

Explanation:

For polyatomic gas ratio of specific heat γ < 1.33

Because we know that as the atomicity of gas increases its value of γ decreases.

The Correct option is C. Ag

Correct Answer is: C. Ag 

Silver (Ag) belongs to second transition series while Iron (Fe), Cobalt (Co) and Nickel (Ni) belongs to first transition series.

p – block elements : The elements in which the last electron enters the p – orbital of their outermost energy level are called p – block elements. It contains elements of group 13,14, 15, 16, 17 and 18 of the periodic table. General electronic configuration of p – block elements is ns² np^1-6.

d – block elements :- The elements in which the last electron enters the d – orbitals of their last but one energy level constitute d – block elements. There block consists of the elements lying between s and p block starting from 4^th period and onwards. They constitute groups 3 to 12 in the periodic table. General electronic configuration is (n – 1) d^1-10 ns^1-2.

2H₂ (g) + O₂ (g) → 2H₂O (vapour)

2 vol        1 vol         2 vol

2 volumes of H₂ reacts with 1 volume of O₂ to produce 2 volumes of water vapour.

10 volumes of dihydrogen gas reacts with 5 volumes of O₂ to produce 10 volumes of water vapour.

Water vapour produced = 10 volumes.

Correct option: (A) atoms

Correct option: (A) 10^-26 kg 

Correct option: (D) 10^-15 m

i. Physical properties : 

These are properties which can be measured or observed without changing the identity or the composition of the substance. 

e.g. Colour, odour, melting point, boiling point, density, etc.

ii. Chemical properties : 

These are properties in which substances undergo change in chemical composition. 

e.g. Coal bums in air to produce carbon dioxide, magnesium wire bums in air in the presence of oxygen to form magnesium oxide, etc.

i. It is more convenient to measure the volume rather than mass of the gas. 

ii. It is found from Avogadro law that one mole of any gas occupies a volume of 22.4 dm³ at standard temperature (0°C) and pressure (1 atm) (STP).

iii. The volume of 22.4 dm³ at STP is known as molar volume of a gas.

iv. The relationship between number of moles and molar volume can be expressed as follows :

Number of moles of a gas (n) = \(\frac{Volume\,of\,the\,gas\,at\,STP}{Molar\,volume\,of\,the\,gas}\)

= \(\frac{Volume\,of\,the\,gas\,at\,STP}{22.4\,dm^3\,mol^{-1}}\)

[Note : IUPAC has recently changed the standard pressure to 1 bar. Under these new STP conditions the molar volume of a gas is 22.71 L mol^-1]

Correct option: (B) molecule

Matter on the basis of chemical composition can be classified as follows :

i. Pure substances : 

They always have a definite chemical composition. They always have the same properties regardless of their origin. e.g. Pure metal, distilled water, etc.

They are of two types :

a. Elements : 

They are pure substances, which cannot be broken down into simpler substances by ordinary chemical changes. 

Elements are further classified into three types :

1. Metals :

• They have a lustre (a shiny appearance). 
• They conduct heat and electricity. 
• They can be drawn into wire (ductile). 
• They can be hammered into thin sheets (malleable). 
• e.g. Gold, silver, copper, iron. Mercury is a liquid metal at room temperature.

 2. Nonmetals :

• They have no lustre, (except diamond, iodine) 
• They are poor conductors of heat and electricity, (except graphite) 
• They cannot be hammered into sheets or drawn into wire, because they are brittle. e.g. Iodine

3. Metalloids : 

Some elements have properties that are intermediate between metals and nonmetals and are called metalloids or semimetals.

e.g. Arsenic, silicon and germanium.

b. Compounds : 

They are the pure substances which are made up of two or more elements in fixed proportion. 

e.g. Water, ammonia, methane, etc.

ii. Mixtures : 

They have no definite chemical composition and hence no definite properties. 

They can be separated by physical methods. e.g. Paint (mixture of oils, pigment, additive), concrete (a mixture of sand, cement, water), etc.

Mixtures are of two types :

• Homogeneous mixture : In homogeneous mixture, constituents remain uniformly mixed throughout its bulk. e.g. Solution, in which solute and solvent molecules are uniformly mixed throughout its bulk.
• Heterogeneous mixture : In heterogeneous mixture, constituents are not uniformly mixed throughout its bulk. e.g. Suspension, which contains insoluble solid in a liquid. 

The common unit used for the measurement of volume of liquids and gases is litre (L).

If any reactant or product is a solid or liquid, the volume occupied by them is extremely small as compared to the gas and therefore, the law of Gay Lussac's is not obeyed.

The two values seem to be equivalent but scientifically they are different, 4.0 g has two significant figures and hence, its precision is 0.1 part in 4. 4.00 g has three significant figures and hence, its precision is 0.01 parts in 4. Hence, 4.00 g is more precise than 4.0 g.

Quite often the uncertainty in measurement is expressed in terms of percentage by putting ± sign before it, e.g., 250 ± 1% etc. If the same instrument is used for measuring different quantities, then smaller the quantity to equal to ± 1 mg, then if we weigh 100 g on it, the result can be reported as 100 ± 0.001%. If same balance is used to weigh 10 g, the result reported will be 10 ± 0.01%, and if 1 g is weighed, the result reported will be 10 ± 0.1%. Hence, smaller the quantity to be measured, more precise should be the instrument.

Correct option is (d) 1 x 10⁸ / 9.108 x 6.023

Option : (b) Ampere

\(\because\) 1 L = 0.001 m³

^{\(\therefore\)} 5 L = 5 × 0.001 m³

= 0.005 m³

= 5 × 10^–3 m³

℉ = \(\frac{9}{5}\)(ºC) + 32

Or ℉ = \(\big(\)ºC x \(\frac{9}{5}\)\(\big)\)+ 32 t

℃ = (℉ - 32) x \(\frac{5}{9}\)

To find the temperature when both are equal, we use an old algebra trick and just set ℉ = ℃ and solve one of the equations.

℃ = \(\big(\)ºC x \(\frac{9}{5}\)\(\big)\)+ 32

Or, ℃ - \(\big(\)℃ x \(\frac{9}{5}\)\(\big)\) = 32

Or, \(-\frac{4}{5}\) x ℃ = 32

Or, ℃ = \(-\frac{32\times5}{4}\) = -40

℉ = \(\big(^oF\times\frac{9}{5}\big)\)+ 32

Or, ℉ - \(\big(^oF\times\frac{9}{5}\big)\) = 32

Or, \(-\frac{4}{5}\) x ℉ = 32

℉ = \(-\frac{-32\times5}{4}\) = -40

So, at – 40-degree temperature, both the Celsius and Fahrenheit scales read the same value.

Option : (a) – 40°

Volume is the amount of space occupied by a three-dimensional object. It does not depend on shape.

It is defined as the standard of reference chosen to measure a physical quantity.

1. Degree Celsius (°C) 

2. Degree Fahrenheit (°F) 

3. Kelvin (K)

Units are expressed in various systems like CGS (centimetre for length, gram for mass and second for time), FPS (foot, pound, second) and MKS (metre, kilogram, second) systems, etc.

The arbitrarily decided and universally accepted standards are called units. 

e.g. Metre (m), kilogram (kg).

i. Some properties such as the atomic radius, bond length, wavelength of electromagnetic radiation, etc. are very small and therefore, fractional units of the SI unit of length are often used to express these properties.

ii. Fractional units of length : Nanometre (nm), picometre (pm), etc.

iii. Nanometre (nm) and picometre (pm) are related to the SI unit of length (m) as follows :

1 nm = 10^-9 m, 1 pm = 10^-12m

The SI unit of volume is expressed as (metre)³ or m³.

4 number of significant figures in 0.06070.