Which of the following parts of the brain does regulate pituitary gland?

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Which of the following parts of the brain does regulate pituitary gland?

AThalamus

BHypothalamus

CCerebellum

DCerebrum

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option b (Hypothalamus)
Explanation: The hypothalamus directly regulates the pituitary gland through hormonal and neural signals. It controls the release of hormones from the anterior pituitary and directly releases hormones via the posterior pituitary.

• Option a: Thalamus primarily relays sensory and motor signals to the cerebral cortex and regulates consciousness, sleep, and alertness, but it does not directly regulate the pituitary gland.
• Option b: Hypothalamus is directly connected to the pituitary gland and controls its hormone secretion, thus regulating many bodily functions.
• Option c: Cerebellum is primarily involved in motor control, coordination, and balance, and does not regulate the pituitary gland.
• Option d: Cerebrum is the largest part of the brain and is responsible for higher-level cognitive functions, sensory processing, and voluntary motor control, but it does not directly regulate the pituitary gland.

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The joint sitting of the Lok Sabha and the Rajya Sabha of states is summoned by

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The joint sitting of the Lok Sabha and the Rajya Sabha of states is summoned by

AThe president

BThe speaker of the Lok Sabha

CThe Parliament

DThe Chairman of the Rajya Sabha

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option a : The president
Explanation: The President of India summons the joint sitting of both Houses of Parliament (Lok Sabha and Rajya Sabha). This is done according to Article 108 of the Indian Constitution. The purpose of a joint sitting is to resolve a deadlock between the two Houses on a particular bill.

• Option a: This is the correct answer as the President is constitutionally empowered to summon the joint sitting.
• Option b: The Speaker of the Lok Sabha presides over the joint sitting but does not summon it.
• Option c: While Parliament as a whole is involved, the President specifically has the power to summon the joint sitting.
• Option d: The Chairman of the Rajya Sabha (who is also the Vice-President of India) does not summon the joint sitting. The Vice-President does not preside over the joint sitting; the Speaker of Lok Sabha does.

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Lime water becomes milky due to which of the following gases?

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Lime water becomes milky due to which of the following gases?

ACO₂

BO₂

CNO₂

DN₂

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option a (CO₂)
Explanation: Lime water, which is an aqueous solution of calcium hydroxide (\(Ca(OH)_2\)), turns milky when carbon dioxide (\(CO_2\)) gas is passed through it. This is because \(CO_2\) reacts with \(Ca(OH)_2\) to form calcium carbonate (\(CaCO_3\)), which is an insoluble white precipitate, causing the milky appearance.

• Option a: \(CO_2\) reacts with lime water (\(Ca(OH)_2\)) to form insoluble \(CaCO_3\), making it milky.
• Option b: \(O_2\) does not react with lime water to produce a milky appearance.
• Option c: \(NO_2\) reacts with lime water but does not produce a milky appearance. It forms calcium nitrite and calcium nitrate.
• Option d: \(N_2\) is generally unreactive and does not react with lime water to produce a milky appearance.

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The famous book written by the scholar Al-Biruni is

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The famous book written by the scholar Al-Biruni is

AKitab ul-Hind

BHindustani

CAl-Hindustani

DSher-e-Hind

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option a (Kitab ul-Hind)
Explanation: Al-Biruni, a renowned scholar, is best known for his book Kitab ul-Hind (also known as Ta'rikh al-Hind), which provides a detailed and insightful account of the Indian subcontinent in the 11th century. This book covers various aspects of Indian society, culture, religion, philosophy, science, and geography.

• Option a: Kitab ul-Hind is the correct answer as it is the well-known and widely recognized book authored by Al-Biruni.
• Option b: Hindustani is a language and not a book written by Al-Biruni.
• Option c: Al-Hindustani is not a known title of any work by Al-Biruni.
• Option d: Sher-e-Hind (Lion of India) is a title, potentially a honorific, and not a book written by Al-Biruni.

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Which Vitamin is popularly known as the 'sunshine vitamin'?

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Which Vitamin is popularly known as the 'sunshine vitamin'?

AVitamin A

BVitamin C

CVitamin D

DVitamin B

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option c (Vitamin D)
Explanation: Vitamin D is known as the 'sunshine vitamin' because the body can synthesize it when exposed to sunlight. Ultraviolet (UV) rays from the sun trigger Vitamin D synthesis in the skin. This makes it different from other vitamins that need to be obtained solely from diet or supplements.

• Option A: Vitamin A is important for vision, immune function, and cell growth.
• Option B: Vitamin C is an antioxidant that supports immune function and collagen production.
• Option D: Vitamin B is a complex of several vitamins involved in energy metabolism and nerve function.

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Malaria is caused by :

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Malaria is caused by :

APlasmodium

BFemale Anopheles mosquito

CCulex mosquito

DVirus

Akhilesh ? Apr 16 '25 at 23:06

correct answer is: option a [Plasmodium]
Explanation: Malaria is caused by the parasite Plasmodium, which is transmitted to humans through the bite of infected female Anopheles mosquitoes. The mosquito is the vector, not the cause of the disease.

• Option a: Plasmodium is the actual parasitic protozoan that infects humans and causes malaria.
• Option b: While female Anopheles mosquitoes transmit the Plasmodium parasite, they are not the cause of malaria themselves, but rather the vector.
• Option c: Culex mosquitoes are vectors for other diseases like West Nile virus and filariasis, but not malaria.
• Option d: Viruses cause diseases like the flu and common cold, but not malaria, which is a parasitic disease.

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The first Satyagraha was started in Champaran, Bihar in

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The first Satyagraha was started in Champaran, Bihar in

A1929

B1907

C1922

D1917

Akhilesh ? Apr 16 '25 at 23:05

correct answer is: option d : 1917
Explanation: The first Satyagraha movement led by Mahatma Gandhi in India was the Champaran Satyagraha, which began in 1917 in the Champaran district of Bihar. This movement was launched to protest against the oppressive policies of the British indigo planters, who forced farmers to grow indigo and sell it at very low prices. Gandhi's intervention and leadership led to a significant improvement in the conditions of the farmers and marked a crucial moment in the Indian independence movement.

• Option a: 1929 is incorrect because the Champaran Satyagraha took place much earlier.
• Option b: 1907 is incorrect as the Champaran Satyagraha happened later. It was a period when other nationalist activities were gaining momentum, but not the Champaran Satyagraha.
• Option c: 1922 is incorrect. While the Non-Cooperation Movement led by Gandhi was in full swing around this time, the Champaran Satyagraha was concluded years before.

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Glucose and fructose are example of

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Glucose and fructose are example of

AIsotopes

BIsotones

CIsobars

DIsomers

Akhilesh ? Apr 16 '25 at 23:05

correct answer is: option d : Isomers
Explanation: Isomers are molecules that have the same molecular formula but different structural formulas, leading to different arrangements of atoms in space. Glucose and fructose both have the molecular formula \((C_6H_{12}O_6)\), but their atoms are arranged differently, making them isomers.

• Option a: Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. Glucose and fructose are different molecules, not atoms of the same element.
• Option b: Isotones are atoms that have the same number of neutrons but different numbers of protons. Glucose and fructose are different molecules, not atoms with the same number of neutrons but different numbers of protons.
• Option c: Isobars are atoms that have the same mass number (number of protons + number of neutrons) but different atomic numbers (number of protons). Glucose and fructose are different molecules, not atoms with the same mass number but different atomic numbers.

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The SI unit of electrical conductance is

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The SI unit of electrical conductance is

AOhm

BSiemens

COhm meter

DAmpere

Akhilesh ? Apr 16 '25 at 23:05

correct answer is: option b [Siemens]
Explanation: Electrical conductance is the measure of how easily an electric current flows through a material. It is the reciprocal of resistance. The SI unit of electrical conductance is the Siemens (S).

• Option a: Ohm is the SI unit of electrical resistance.
• Option c: Ohm meter is the SI unit of electrical resistivity.
• Option d: Ampere is the SI unit of electrical current.

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In a circuit, voltmeter is always connected in ?

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In a circuit, voltmeter is always connected in ?

AEither series or parallel

BTriangular

CSeries

DParallel

Akhilesh ? Apr 16 '25 at 23:05

correct answer is: option d : Parallel
Explanation: A voltmeter is a device used to measure the voltage, or potential difference, between two points in a circuit. Voltmeters are always connected in parallel with the component or portion of the circuit across which the voltage is to be measured. This is because a voltmeter has a very high internal resistance, so when connected in parallel, it draws a negligible amount of current from the circuit, ensuring that the voltage being measured is not significantly affected by the presence of the voltmeter. Connecting a voltmeter in series would introduce a large resistance into the circuit, drastically altering the current flow and giving an inaccurate voltage reading, and potentially damaging the voltmeter.

• Option a: Either series or parallel is incorrect. A voltmeter is not designed to be connected in series, as it would disrupt the circuit and give inaccurate readings.
• Option b: Triangular is incorrect. It's not a relevant connection method for a voltmeter.
• Option c: Series is incorrect. Connecting a voltmeter in series introduces a large resistance, disturbing the circuit.

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In the following question, select the related letters from the given alternatives. AG : ZT ∷ JD : ?

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In the following question, select the related letters from the given alternatives. AG : ZT ∷ JD : ?

AUV

BPX

CQW

DOY

Akhilesh ? Apr 17 '25 at 20:02

correct answer is: option c (QW)
Explanation: The pattern is based on the reverse alphabetical order. 'A' is the first letter and 'Z' is the last. 'G' is the 7th letter and 'T' is the 7th letter from the end. Similarly, 'J' is the 10th letter and the 10th letter from the end is 'Q'. 'D' is the 4th letter and the 4th letter from the end is 'W'. Therefore, the answer is QW.

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If 3 small spherical balls having radius 3 cm, 4 cm, and 5 cm melt together to form a big spherical ball. What is the radius of big spherical ball?

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If 3 small spherical balls having radius 3 cm, 4 cm, and 5 cm melt together to form a big spherical ball. What is the radius of big spherical ball?

A8 cm

B7 cm

C6 cm

D9 cm

Akhilesh ? Apr 17 '25 at 20:46

correct answer is: option c (6 cm)
Explanation:

\( V = \frac{4}{3}\pi r^3 \)

**Steps:**

1. Calculate the volume of each small sphere:

   \( V_1 = \frac{4}{3}\pi (3)^3 = 36\pi \) cm³
   \( V_2 = \frac{4}{3}\pi (4)^3 = \frac{256}{3}\pi \) cm³
   \( V_3 = \frac{4}{3}\pi (5)^3 = \frac{500}{3}\pi \) cm³

2. Add the volumes together:

   \( V_{\text{total}} = 36\pi + \frac{256}{3}\pi + \frac{500}{3}\pi = 288\pi \) cm³

3. Solve for the radius \( R \) of the big sphere:

   \( \frac{4}{3}\pi R^3 = 288\pi \)
   \( R^3 = 216 \)
   \( R = \sqrt[3]{216} = 6 \) cm

Final Answer: \(\boxed{6 \text{ cm}}\)

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