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UPSC Civil services Entrance exams General Studies test # General Science Organic compounds containing Nitrogen Prepare / Learn

Q1. The main product formed by treating an alkyl or benzyl halide with excess ammonia

A. Secondary

B. Primary

C. Tertiary

D. Mixed

Answer : Option B
Explaination / Solution:

The major product is primary amine.

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

Q2. General formula for alkenes is

A. CnH2n+2

B. CnH2n+3

C. CnH2n

D. CnH2n+1

Answer : Option C
Explaination / Solution:

Alkenes are unsaturated hydrocarbons with atleast on double bond between the carbon atoms.Their general formula is CnH2n.

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

Q3. Cryoscopic constant of a liquid is

A. Decrease in freezing point when 1 g of solute is dissolved per kg of the solvent

B. The elevation for 1 molar solution

C. Decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent

D. A factor used for calculation of elevation in boiling point

Answer : Option C
Explaination / Solution:

Δ T_{f} = K_{f} m .

When m(molality )= 1m then

k_{f} = Δ T_{f}

UPSC Civil services Entrance exams General Studies test # General Science Indian Economy 1950 to 1990 Prepare / Learn

Q4. There were 29 industries under public sector out of which how many industries were under schedule A

A. 17.0

B. 5

C. 10

D. 12

Answer : Option A
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Government Budget and the Economy Prepare / Learn

Q5. One of the two components of government Revenue in the budget are

A. Expenditure receipts

B. Revenue receipts

C. Budget receipts

D. Revenue Expenditure

Answer : Option B
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Measures of Central Tendency Prepare / Learn

Q6. The median is ______.

A. Affected by extreme scores

B. The middle point

C. The average

D. The highest number

Answer : Option B
Explaination / Solution:

Median is that positional value of the variable which divides the distribution into two equal parts.

UPSC Civil services Entrance exams General Studies test # General Science Employment Growth Informational and other Issues Prepare / Learn

Q7. Work participation rate is

A. Work forceTotal Rural Population × 100

B. Work forceTotal labour force × 100

C. Work forceTotal Population × 100

D. Work forceTotal Rural Population × 10

Answer : Option C
Explaination / Solution:

It refers to participation of people in production activity and is measured as ratio of workforce to total population of the country.

UPSC Civil services Entrance exams General Studies test # General Science Laws of Motion Prepare / Learn

Q8. Impulse is

A. the average of force over a short period

B. the derivative of force over a short period

C. the integral of force over a short period

D. the difference of force over a short period

Answer : Option C
Explaination / Solution:

A resultant force causes acceleration and a change in the velocity of the body for as long as it acts.The change in momentum is equal to the product of the average force and duration. Conversely, a small force applied for a long time produces the same change in momentum, the same impulse, as a larger force applied for a short time interval.

Impulse J is

$J = F_{average} (t_{2} - t_{1})$

The impulse is the integral of the resultant force (F) with respect to time

$J = \int_{t_{1}}^{t_{2}} F . d t$

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

Q9. The highest value of oxidation number changes from 1 to 7

A. the first three groups

B. In alkaline earth metals

C. in the atoms of transition elements

D. across the third period in the periodic table

Answer : Option D
Explaination / Solution:

The highest value of oxidation number exhibited by an atom of an element generally increases across the period in the periodic table.

UPSC Civil services Entrance exams General Studies test # General Science Locomotion and Movement Prepare / Learn

Q10. Polymerisation of actin monomers involves ATP hydrolysis as shown in the following figure : [choose the correct one]