Q. The information provided are accurate. (2023)
A.
Correct
B.
Incorrect
C.
Depends on context
D.
None of the above
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Solution
The correct form is 'The information provided is accurate.' 'Information' is an uncountable noun and takes a singular verb.
Correct Answer: B — Incorrect
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Q. The informations are incorrect.
A.
The information is incorrect.
B.
The informations is incorrect.
C.
The information are incorrect.
D.
The informations were incorrect.
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Solution
The word 'information' is uncountable and should be singular.
Correct Answer: A — The information is incorrect.
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Q. The informations you provided are helpful. (2019)
A.
The information you provided is helpful.
B.
The informations you provided is helpful.
C.
The information you provide are helpful.
D.
The informations you provided were helpful.
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Solution
The word 'information' is uncountable and should be treated as singular.
Correct Answer: A — The information you provided is helpful.
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Q. The Integrated Child Development Services (ICDS) scheme was launched in which year? (1975)
A.
1975
B.
1985
C.
1995
D.
2005
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Solution
The Integrated Child Development Services (ICDS) scheme was launched in 1975 to provide food, preschool education, and primary healthcare to children under 6 years of age.
Correct Answer: A — 1975
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Q. The International Monetary Fund (IMF) primarily aims to: (1944)
A.
Provide loans to developing countries for infrastructure projects
B.
Ensure the stability of the international monetary system
C.
Promote human rights globally
D.
Facilitate cultural exchanges between nations
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Solution
The IMF, established in 1944, aims to ensure the stability of the international monetary system.
Correct Answer: B — Ensure the stability of the international monetary system
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Q. The interquartile range of the data set: 1, 2, 3, 4, 5, 6, 7, 8 is:
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Solution
Q1 = 3, Q3 = 6. Interquartile Range = Q3 - Q1 = 6 - 3 = 3.
Correct Answer: B — 3
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Q. The introduction of which crop during the medieval period significantly transformed agriculture in Europe?
A.
Wheat
B.
Rice
C.
Potato
D.
Maize
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Solution
The introduction of the potato during the medieval period significantly transformed agriculture in Europe, leading to increased food security and population growth.
Correct Answer: C — Potato
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Q. The introduction of which vaccine in the 18th century significantly reduced the incidence of smallpox?
A.
Polio vaccine
B.
Measles vaccine
C.
Smallpox vaccine
D.
Typhoid vaccine
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Solution
The smallpox vaccine, developed by Edward Jenner in 1796, was the first successful vaccine and played a crucial role in reducing smallpox outbreaks.
Correct Answer: C — Smallpox vaccine
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Q. The invention of the compass, which greatly aided navigation, is attributed to which civilization?
A.
Ancient Greece
B.
Medieval China
C.
The Roman Empire
D.
The Indus Valley Civilization
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Solution
The compass was invented in medieval China and played a crucial role in maritime navigation.
Correct Answer: B — Medieval China
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Q. The invention of the telephone is attributed to which inventor?
A.
Thomas Edison
B.
Alexander Graham Bell
C.
Nikola Tesla
D.
Guglielmo Marconi
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Solution
Alexander Graham Bell is credited with the invention of the telephone in 1876, revolutionizing communication.
Correct Answer: B — Alexander Graham Bell
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Q. The Lahore Resolution was passed in which year? (1940)
A.
1940
B.
1935
C.
1929
D.
1947
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Solution
The Lahore Resolution was passed in 1940, calling for greater autonomy for Muslim-majority regions in India.
Correct Answer: A — 1940
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Q. The Langmuir adsorption isotherm assumes that:
A.
Adsorption occurs on a surface with infinite sites
B.
Adsorption sites are equivalent
C.
Adsorption is a multilayer process
D.
Adsorption is independent of pressure
Show solution
Solution
The Langmuir isotherm assumes that adsorption sites are equivalent and that the process is monolayer.
Correct Answer: B — Adsorption sites are equivalent
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Q. The Langmuir adsorption isotherm assumes which of the following?
A.
Adsorption occurs on a surface with infinite sites
B.
Adsorption sites are equivalent
C.
Adsorption is a multilayer process
D.
Adsorption is temperature independent
Show solution
Solution
The Langmuir isotherm assumes that adsorption occurs on a surface with a finite number of equivalent sites.
Correct Answer: B — Adsorption sites are equivalent
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Q. The Langmuir isotherm assumes that adsorption occurs at specific sites on the adsorbent. What is the maximum number of molecules that can be adsorbed at a given temperature called?
A.
Adsorption capacity
B.
Saturation capacity
C.
Equilibrium constant
D.
Adsorption energy
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Solution
The maximum number of molecules that can be adsorbed at a given temperature is referred to as the saturation capacity.
Correct Answer: B — Saturation capacity
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Q. The Langmuir isotherm assumes that adsorption occurs at specific sites on the surface. What is the maximum coverage called? (2021)
A.
Saturation
B.
Monolayer
C.
Multilayer
D.
Equilibrium
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Solution
In the Langmuir isotherm, the maximum coverage of adsorbate on the adsorbent is referred to as a monolayer.
Correct Answer: B — Monolayer
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Q. The Langmuir isotherm assumes that adsorption occurs at specific sites on the surface. What does this imply? (2020)
A.
Adsorption is uniform.
B.
Adsorption is multilayered.
C.
Adsorption is monolayered.
D.
Adsorption is temperature dependent.
Show solution
Solution
The Langmuir isotherm assumes that adsorption occurs at specific sites, leading to a monolayer coverage of the adsorbate.
Correct Answer: C — Adsorption is monolayered.
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Q. The law of conservation of energy states that energy cannot be _____. (2022)
A.
Created
B.
Destroyed
C.
Transformed
D.
Both A and B
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Solution
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.
Correct Answer: D — Both A and B
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Q. The law that relates the pressure and volume of a gas at constant temperature is known as: (2019)
A.
Charles's Law
B.
Avogadro's Law
C.
Boyle's Law
D.
Ideal Gas Law
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Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.
Correct Answer: C — Boyle's Law
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Q. The law that relates the volume of a gas to its temperature at constant pressure is known as: (2018)
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Graham's Law
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Solution
Charles's Law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. The lecture was so __________ that many students found it difficult to stay awake. (2023)
A.
engaging
B.
monotonous
C.
inspiring
D.
dynamic
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Solution
Finding it difficult to stay awake indicates that the lecture was monotonous.
Correct Answer: B — monotonous
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Q. The length of a rod is measured as 50 cm with an error of 1 cm. What is the minimum possible length?
A.
49 cm
B.
50 cm
C.
51 cm
D.
48 cm
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Solution
Minimum possible length = Measured value - Error = 50 - 1 = 49 cm.
Correct Answer: A — 49 cm
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Q. The lengths of the sides of triangle ABC are 5 cm, 12 cm, and 13 cm. What is the area of the triangle? (2019)
A.
30 cm²
B.
60 cm²
C.
24 cm²
D.
40 cm²
Show solution
Solution
Using Heron's formula, s = (5 + 12 + 13)/2 = 15. Area = √[s(s-a)(s-b)(s-c)] = √[15(15-5)(15-12)(15-13)] = √[15*10*3*2] = √[900] = 30 cm².
Correct Answer: A — 30 cm²
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Q. The lengths of the sides of triangle ABC are 7 cm, 24 cm, and 25 cm. Is this triangle a right triangle? (2020)
A.
Yes
B.
No
C.
Cannot be determined
D.
Only if angle A is 90 degrees
Show solution
Solution
Using the Pythagorean theorem, 7^2 + 24^2 = 49 + 576 = 625 = 25^2. Therefore, triangle ABC is a right triangle.
Correct Answer: A — Yes
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Q. The lengths of the sides of triangle ABC are 7 cm, 24 cm, and 25 cm. What type of triangle is it?
A.
Acute
B.
Obtuse
C.
Right
D.
Equilateral
Show solution
Solution
Since 7^2 + 24^2 = 25^2, triangle ABC is a right triangle.
Correct Answer: C — Right
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Q. The letter was written by John. What is the active voice of this sentence? (2023)
A.
John writes the letter.
B.
John is writing the letter.
C.
John wrote the letter.
D.
The letter is written by John.
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Solution
In active voice, we highlight John as the doer, thus it becomes 'John wrote the letter.'
Correct Answer: C — John wrote the letter.
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Q. The lines represented by the equation 2x^2 + 3xy + y^2 = 0 are:
A.
Coincident
B.
Parallel
C.
Intersecting
D.
Perpendicular
Show solution
Solution
To determine the nature of the lines, we can analyze the discriminant of the quadratic equation.
Correct Answer: C — Intersecting
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Q. The lines represented by the equation 4x^2 - 12xy + 9y^2 = 0 are:
A.
Parallel
B.
Coincident
C.
Intersecting
D.
Perpendicular
Show solution
Solution
The lines are perpendicular if the product of their slopes is -1. We can find the slopes from the equation and check this condition.
Correct Answer: D — Perpendicular
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Q. The lines represented by the equation 5x^2 - 6xy + 5y^2 = 0 are:
A.
Parallel
B.
Perpendicular
C.
Coincident
D.
Intersecting
Show solution
Solution
The discriminant is negative, indicating that the lines are perpendicular.
Correct Answer: B — Perpendicular
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Q. The lines represented by the equation 5x^2 - 6xy + 5y^2 = 0 intersect at:
A.
(0,0)
B.
(1,1)
C.
(2,2)
D.
(3,3)
Show solution
Solution
The lines intersect at the origin (0,0) as derived from the equation.
Correct Answer: A — (0,0)
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Q. The lines represented by the equation 5x^2 - 6xy + y^2 = 0 intersect at which point?
A.
(0,0)
B.
(1,1)
C.
(2,2)
D.
(3,3)
Show solution
Solution
The lines intersect at the origin, which can be verified by substituting x = 0 and y = 0 into the equation.
Correct Answer: A — (0,0)
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