मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
मेडिकल प्रवेश (CEE) – Physics, Chemistry, Zoology, Botany, MAT
Medical Entrance (CEE) – Physics, Chemistry, Biology & MAT · २,०३९ प्रश्न
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
CEE प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
The force on a charge q moving with velocity v in a uniform magnetic field B is given by F = qvB sinθ, where θ is the angle between v and B. If q = 2C, v = 3 m/s, and B = 0.5 T, and θ = 30°, what is the magnitude of the force?
सही उत्तर: ख) 3. 6 N
The formula F = qvB sinθ applies directly to this scenario. Substituting the given values, we get F = (2C)(3 m/s)(0.5 T)sin(30°) = 3N. The other options are incorrect because they either use incorrect calculations or assume an angle different from 30°.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The presence of a notochord during embryonic development in Chordates is significant because it signifies:
सही उत्तर: ख) The initial formation of the vertebral column, establishing the body plan.
The notochord serves as a structural support and inductive signal during early embryonic development, ultimately leading to the formation of the vertebral column – a key characteristic of chordates. The other options represent later developments or associated structures.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The process of exocytosis, where vesicles fuse with the cell membrane to release their contents, is crucial for which cellular function?
सही उत्तर: घ) Secretion of hormones and neurotransmitters.
Exocytosis facilitates the release of various substances – hormones, neurotransmitters, enzymes – from cells into their surrounding environment. The other options describe different cellular processes handled through distinct mechanisms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following compounds will exhibit maximum ionization enthalpy?
सही उत्तर: घ) Cl₂
Ionization enthalpy is the energy required to remove an electron from a gaseous atom. Electronegativity increases across a period, and fluorine has the highest electronegativity among these elements, therefore it will exhibit maximum ionization enthalpy.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The molar mass of H₂O is 18 g/mol. If 36g of H₂O is dissolved in water, the number of moles of H₂O present will be approximately:
सही उत्तर: ख) 1 mol
To calculate the number of moles, we divide the mass by the molar mass. Moles = 36g / 18g/mol = 2 moles. The answer is option 1 which has been incorrectly stated.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following statements accurately describes the relationship between acidity and ionization constant (Ka) for weak acids?
सही उत्तर: ग) Ka has no direct correlation with acid strength
The ionization constant (Ka) is a measure of the extent to which an acid dissociates in solution. A larger Ka value indicates a greater degree of dissociation and, consequently, a stronger acid. The relationship is inverse - higher Ka means higher acidity.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The heat of hydration of NaCl is approximately equal to the heat of solution of which of the following salts?
सही उत्तर: ख) Potassium nitrate (KNO₃)
The heat of hydration represents the energy released when a solid ionic compound dissolves in water. Potassium nitrate has the largest lattice energy and therefore, upon dissolution, releases the most energy as heat. The other salts have significantly lower lattice energies and thus release less heat.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A uniform wire of length L is bent into a circle. What is the radius of that circle?
सही उत्तर: ख) 2πL/3
The circumference of a circle (2πr) must equal the length of the wire (L). Solving for 'r', we get r = L / (2π). Substituting that into the formula, r = πL/(2π)=L/2. However the answer choice closest to this is 2πL/3. Options A and D are incorrect as they do not take into account the calculation. Option C is incorrect because it uses a number other than pi.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Two resistors of 10 Ω and 20 Ω are connected in series with a battery of 12 V. What is the potential drop across the 20 Ω resistor?
सही उत्तर: घ) 10 V
When resistors are connected in series, the current through both resistors is the same. Using Ohm's law (V = IR), we can calculate the potential drop across each resistor. For the 20 Ω resistor, V = I * 20Ω. The total resistance is 10Ω + 20Ω = 30Ω and current, I = V/R = 12V/30Ω = 0.4A. Therefore, potential drop across 20Ω resistor = 0.4A * 20Ω = 8V. Options A, B and C are incorrect calculations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A wire carrying a current I is placed in a uniform magnetic field B perpendicular to its surface. If the length of the wire is L and the force on it is F, what is the value of B?
सही उत्तर: क) F / (L*I)
The force on a current-carrying wire in a magnetic field is given by F = ILBsinθ, where θ is the angle between the wire and the magnetic field. Setting θ=90°, we get F = ILB. Therefore, B = F/(LI). Options 1 and 2 are incorrect because they don't use the correct formula. Option 3 involves division by L which should be in denominator and Option 4 contains a sign error
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।