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UPSC Civil services Entrance exams General Studies test # General Science Poverty Prepare / Learn

Q1. Who was the first to use the concept of poverty line in India

A. Jawahar lal Nehru

B. B.R.Ambedkar

C. Dadabhai Naroji

D. Mahatma Gandhi

Answer : Option C
Explaination / Solution:

The history of poverty estimation in India goes back to 19th century when Dadabhai Naoroji’s efforts and careful study led him to conclude subsistence based poverty line at 1867-68 prices, though he never used the word “poverty line”. It was based on the cost of a subsistence diet consisting of ‘rice or flour, dhal, mutton, vegetables, ghee, vegetable oil and salt’.

UPSC Civil services Entrance exams General Studies test # General Science Plant Kingdom Prepare / Learn

Q2. Pond scum is

A. Oedogonium

B. Nostoc

C. Ulothrix

D. Spirogyra

Answer : Option D
Explaination / Solution:

Green patchy structure that develops around the surface of stagnant water bodies having thread like mass are called pond scum. They are actually a species of green algae ],Spirogyra.

UPSC Civil services Entrance exams General Studies test # General Science Cell The Unit of Life Prepare / Learn

Q3. The bacterial flagellum consists of

A. Filament, pili, and basal body

B. Filament, hook, and fimbriae

C. Filament ,basal body, pili

D. Filament, hook and basal body

Answer : Option D
Explaination / Solution:

A bacterial flagellum has 3 basic parts: a filament, a hook, and a basal body.

1) The filament is the rigid, helical structure that extends from the cell surface.

2) The hook is a flexible coupling between the filament and the basal body.

3) The basal body consists of a rod and a series of rings that anchor the flagellum to the cell wall and the cytoplasmic membrane.

UPSC Civil services Entrance exams General Studies test # General Science Collection of Data Prepare / Learn

Q4. Collection of data includes ________.

A. Collecting valuable data from variety of sources, using suitable method of collection.

B. Method of collecting data

C. Only collecting of information.

D. Regeneration of data form the actual one.

Answer : Option A
Explaination / Solution:

In statistics, collection of data have two dimensions. ie; collection of data from informants and the method of collecting it. here source means the population or the informants and methods are questionnair, telephonic interview, information through correspondence etc.

UPSC Civil services Entrance exams General Studies test # General Science Environment Sustainable Economic Development Prepare / Learn

Q5. Ozone depletion refers to the phenomenon of reductions in the amount of ozone in the

A. Stratosphere

B. Mesosphere

C. Troposphere

D. Exosphere

Answer : Option A
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Molecular Basis of Inheritance Prepare / Learn

Q6. A phenomenon where the third base of t-RNA at its 5’ end can pair with a non-complementary base of m-RNA is called

A. Universality

B. Degeneracy

C. Collinearity

D. Wobbling

Answer : Option D
Explaination / Solution:

In 1966, Francis Crick proposed the Wobble Hypothesis. He postulated that the 5' base on the anticodon, which binds to the 3' base on the mRNA, was not as spatially confined as the other two bases, and could, thus, have non-standard base pairing. Crick creatively named it for the small amount of play that occurs at this third codon position. Movement ("wobble") of the base in the 5' anticodon position is necessary for small conformational adjustments that affect the overall pairing geometry of anticodons of tRNA.

UPSC Civil services Entrance exams General Studies test # General Science Current Electricity Prepare / Learn

Q7. Find the pd between A and B from the figure

A. 4V

B. 2V

C. 6V

D. 8V

Answer : Option A
Explaination / Solution:

The resistance in the arm CAD RCAD = 4 + 6 = 10Omega .

The resistance in the arm CBD RCBD = 6 + 4 = 10Omega

Since the resistances in both the arms are equal, the current splits equally in the arms.ICAD = ICBD = 4/2 = 2A.

The potential difference across A and C.VAC = VA - VC = ICAD * RAC = 2 * 4 = 8V

potential difference across B and C VBC = VB - VC = ICBD * RBC = 2 * 6 = 12V.The potential difference across A and B VBA = VB - VA = VBC - VAC = 12 - 8 = 4V.

Point B is at a higher potential when compared to A.

UPSC Civil services Entrance exams General Studies test # General Science Oscillations Prepare / Learn

Q8. The total mechanical energy of a damped system is

A. Continuously increases

B. Continuously dissipated

C. Continiously absorbed

D. Remains the same

Answer : Option B
Explaination / Solution:

The energy is dissipitaed as it decreases in the exponential form , making the amplitude to zero ultimately . every pendulam in non ideal condition behaves like damped system, where damping force which is proportional to velocity is offered it by air resistance the fig shows the damped motion where the amplittude of the succesive oscillayion is damped by an exponential fuction of time

UPSC Civil services Entrance exams General Studies test # General Science Ecosystem Prepare / Learn

Q9. Which of the following pyramid/s is/are inverted:

A. pyramid of number in a grassland system

B. pyramid of biomass in a grassland system

C. pyramid of number in an aquatic system

D. pyramid of biomass in an aquatic system

Answer : Option D
Explaination / Solution:

In the aquatic system, the biomass can increase at higher trophic levels. For example, in Oceans, the food chain typically starts with phytoplankton and ends at predatory fish, which has largest biomass. Thus, the pyramid of biomass is inverted in the aquatic systems including marine, ponds etc.

UPSC Civil services Entrance exams General Studies test # General Science Wave Optics Prepare / Learn

Q10.

If we have two coherent sources