To hear a distant echo, the surface reflecting the sound should atleast be at a distance
(Take velocity of sound in air = 340 m/s)
a.
34 m
b.
17 m
Correct Answer
c.
51 m
d.
10 m
Step-by-Step AI Explanation
Verified Method
The human ear can distinguish two sounds separately if the time gap between them is at least $0.1\text{ s}$ (persistence of hearing). Thus, the minimum distance to hear an echo is given by: $d = \frac{v \times t}{2} = \frac{340 \times 0.1}{2} = 17\text{ m}$.
Q82mcq
When steam is passed over red hot iron, the products formed are
a.
$\text{FeO}$ and $\text{H}_2$
b.
$\text{Fe}_2\text{O}_3$ and $\text{H}_2$
c.
$\text{Fe}_3\text{O}_4$ and $\text{H}_2$
Correct Answer
d.
$\text{Fe}$ and $\text{H}_2\text{O}$
Step-by-Step AI Explanation
Verified Method
When steam is passed over red-hot iron, iron reacts to form ferrosoferric oxide (magnetic iron oxide) and releases hydrogen gas according to the balanced chemical equation:
$$3\text{Fe} + 4\text{H}_2\text{O}\text{ (steam)} \rightarrow \text{Fe}_3\text{O}_4 + 4\text{H}_2\uparrow$$
Q83mcq
Which one is not nitrogen fertilizer?
a.
Ammonium sulphate
b.
CAN
c.
Urea
d.
Gypsum
Correct Answer
Step-by-Step AI Explanation
Verified Method
Gypsum is calcium sulphate dihydrate ($\text{CaSO}_4 \cdot 2\text{H}_2\text{O}$) and is used as a soil conditioner/source of calcium and sulfur, not as a nitrogen fertilizer.
Q84mcq
Plants which grow in saline swamps develop numerous upright aerial roots from normal roots that are called
a.
Respiratory roots
Correct Answer
b.
Prop roots
c.
Parasitic roots
d.
Epiphytic roots
Step-by-Step AI Explanation
Verified Method
Mangrove plants and other vegetation growing in saline swamps develop specialized negatively geotropic roots called respiratory roots (pneumatophores) for gas exchange in oxygen-poor waterlogged soil.
Q85mcq
Match List I with List II and select correct answer using the codes below the lists.
List I
(a) Glycolysis
(b) Kreb's cycle
(c) Electron transport chain
(d) Fermentation
List II
1. $\text{O}_2$ is not utilized
2. ATP are produced
3. Oxidation of pyruvic acid
4. Occurs in cytoplasm
a.
(a)-3, (b)-4, (c)-2, (d)-1
b.
(a)-4, (b)-3, (c)-2, (d)-1
Correct Answer
c.
(a)-1, (b)-3, (c)-4, (d)-2
d.
(a)-2, (b)-4, (c)-1, (d)-3
Step-by-Step AI Explanation
Verified Method
Glycolysis occurs in the cytoplasm (a-4), Krebs cycle involves oxidation of pyruvic acid derivatives (b-3), Electron transport chain is where ATP are produced in high quantities (c-2), and Fermentation is anaerobic where $\text{O}_2$ is not utilized (d-1).
Q86mcq
Parotid gland is affected by
a.
A(H1N1) virus
b.
Hepatitis B-virus
c.
Polio virus
d.
Mumps virus
Correct Answer
Step-by-Step AI Explanation
Verified Method
Mumps virus infects the salivary glands, particularly the parotid glands, leading to painful swelling.
Q87mcq
The founder of Nalanda University
a.
Chandra Gupta I
b.
Kumara Gupta
Correct Answer
c.
Skanda Gupta
d.
Samudra Gupta
Step-by-Step AI Explanation
Verified Method
Nalanda University was established during the reign of the Gupta emperor Kumaragupta I in the 5th century CE.
Q88mcq
Which party in Tamil Nadu first introduced "Free Noon-Meal" scheme?
a.
Congress
b.
Justice party
Correct Answer
c.
Swarajya party
d.
Dravidian party
Step-by-Step AI Explanation
Verified Method
The Justice Party under Sir P. Theagaraya Chetty first introduced the Midday Meal Scheme in 1920 in Chennai (Madras) Corporation schools.
Q89mcq
Krishnadevaraya wrote Amuktamalyada in the language of
a.
Tamil
b.
Kannada
c.
Urdu
d.
Telugu
Correct Answer
Step-by-Step AI Explanation
Verified Method
Amuktamalyada is an epic Telugu poem composed by Krishnadevaraya, the Vijayanagara Emperor.
Q90mcq
Who has received the award of 'Ezhisai Mannar' through Dr. S. Dharmambal?
a.
T.K Bagavathy
b.
M.K Radha
c.
M.K Thiyagaraja Bagavathar
Correct Answer
d.
N.S. Krishnan
Step-by-Step AI Explanation
Verified Method
M.K. Thyagaraja Bhagavathar received the title 'Ezhisai Mannar' by Dr. S. Dharmambal in recognition of his musical accomplishments.
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Match the following and choose the correct answer from the codes given below:
(a) Home Rule Movement 1. 1920
(b) Non-Co-operation Movement 2. 1942
(c) Salt Satyagraha 3. 1916
(d) Quit India Movement 4. 1930
a.
(a)-3, (b)-1, (c)-4, (d)-2
b.
(a)-4, (b)-2, (c)-3, (d)-1
c.
(a)-3, (b)-4, (c)-1, (d)-2
d.
(a)-4, (b)-1, (c)-2, (d)-3
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Consider the statement and choose the correct answer from the codes given below :
Assertion (A) : The partition of Bengal came into effect on 16th October 1905.
Reason (R) : It resulted in Swadeshi Movement in Bengal.
a.
(A) is true but (R) is false.
b.
Both (A) and (R) true (R) is not the correct explanation of (A).
c.
Both (A) and (R) true. (R) is the correct explanation of (A).
d.
(A) is false but (R) is true.
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Consider the following statements :
Assertion (A) : Tenth Five Year Plan period was 2002 – 2007
Reason (R) : Priority was given to reduction of poverty and population growth
a.
(A) true but (R) is false
b.
(A) false but (R) is true
c.
(A) and (R) both are true (R) is correct explanation of (A)
d.
(A) and (R) both are false (R) is not correct explanation of (A)
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Consider the following statement, choose the correct answer :
Assertion (A) : "Liberty means the absence of restraints" — Prof. Seely.
Reason (R) : Liberty is the eager maintenance of that atmosphere in which men have the opportunity to be their best selves.
a.
Both (A) and (R) are True
b.
(A) is True (R) is False
c.
(A) is False (R) is True
d.
(A) and (R) both False
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Consider the following statement, choose the correct answer :
(1) Taluk A Register contains Village no, name and its hamlet names.
(2) Taluk C Register contains short term lease and long term lease particulars of the villages.
a.
(1) and (2) are correct
b.
(1) is correct and (2) is not correct
c.
(1) and (2) are incorrect
d.
(1) is incorrect and (2) is correct
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Consider the following statements:
Assertion (A) : Government cannot claim any right over the trees in private lands.
Reason (R) : Under the Tamilnadu Panchayat Act 1994 certain lands vest in the local body the Panchayat have rights over the trees in these lands.
a.
Both (A) and (R) are false
b.
Both (A) and (R) are true (R) does not explain (A)
c.
(A) is false but (R) is true
d.
Both (A) and (R) are true (R) explains (A)
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I. Sodium hydroxide is used to remove grease stains from cloths.
II. Calcium hydroxide is used in the manufacture of wax.
III. Ammonium hydroxide is used in the white washing of buildings.
IV. Magnesium hydroxide is used as a medicine for stomach troubles.
- Of these
a.
I and II correct
b.
II only correct
c.
III and I correct
d.
IV only correct
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Consider the following statements:
Assertion (A) : Mitochondria are called power houses of the cell.
Reason (R) : Mitochondria contain enzymes necessary for the oxidation of food during respiration and release energy in the form of ATP molecules.
a.
Both (A) and (R) are true (R) explains (A)
b.
Both (A) and (R) are true (R) does not explain (A)
c.
(A) is true but (R) does not explain (A)
d.
(A) is false but (R) is true
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Consider the following statements :
I. Cave Pillars are formed when stalacties and stalagmites meet together.
II. Delta is a depositional feature of almost triangular shape at foot hills.
Which of the statements given above is/are correct?
a.
I only
b.
Both I and II
c.
II only
d.
Neither I nor II
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Consider the following statements:
Assertion (A): The right to Information Act was passed by the Parliament on 12th October 2005
Reason (R) : Parliament passes the Act to enable all the citizens' fundamental right to access information from public bodies.
a.
Both (A) and (R) are individually true
b.
(A) is true but (R) is false
c.
Both (A) and (R) are false
d.
(A) is false but (R) is true
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Match the following List I - List II with suitable options
List I (Source)
(a) Lemon
(b) Grapes
(c) Tomatto
(d) Apple
List II (Acid)
1. Malic acid
2. Oxalic acid
3. Citric acid
4. Tartaric acid
a.
(a)-3, (b)-4, (c)-2, (d)-1
b.
(a)-3, (b)-2, (c)-4, (d)-1
c.
(a)-2, (b)-4, (c)-1, (d)-3
d.
(a)-4, (b)-2, (c)-3, (d)-1
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Match the following :
(a) Age of voting 1. Election Commission
(b) Symbols allocation 2. 18 years
(c) Open ballot 3. 42nd Amendment
(d) Fundamental duties 4. Raising hands
a.
(a)-1, (b)-2, (c)-3, (d)-4
b.
(a)-2, (b)-1, (c)-4, (d)-3
c.
(a)-3, (b)-4, (c)-2, (d)-1
d.
(a)-4, (b)-3, (c)-1, (d)-2
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An employee spends on an average Rs. 2,500 for the first 8 months of a year and Rs. 1,500 for the next 4 months. If he saves Rs. 10,000 that year, then his monthly income is Rs.
a.
2,500
b.
3,000
c.
2,600
d.
3,200
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A tap can fill a tank in 15 minutes. Another tap can empty it in 20 minutes. Initially the tank is empty, if both the taps start functioning at the same time, when will the tank become full?
a.
1 hour
b.
3 hours
c.
2 hours
d.
4 hours
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Match List I with List II & select the correct answer using the codes given below the lists :
List I
(a) Devadayam
(b) Dharmadayam
(c) Dasabandham
(d) Brahmadayam
List II
1. Inams granted to charitable service institutions such as Chowltry, Thanneer Pandhal and educational institutions
2. Inam granted to religious personnels such as prohits and Panchangis
3. Inam granted to religious institutions and their related services
4. Inam granted for support of works on irrigation under maintenance
a.
3 1 4 2
b.
2 3 4 1
c.
1 2 3 4
d.
3 4 2 1
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