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
-
Find the odd one out: Brain, Heart, Liver, Spleen
सही उत्तर: घ) Spleen
The other three options (Brain, Heart, Liver) are all organs of the human body. The spleen is a lymphatic organ, a different category.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following is a characteristic feature of asexual reproduction in sponges (Porifera)? (a) Production of gametes through meiosis. (b) Fusion of haploid sperm and egg cells. (c) Budding or fragmentation resulting in genetically identical offspring. (d) Development of larval stages before reaching adulthood.
सही उत्तर: ग) (c) Budding or fragmentation resulting in genetically identical offspring.
Sponges reproduce asexually primarily through budding or fragmentation, leading to the formation of genetically identical clones. Other options describe sexual reproduction processes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In mammals, the endocrine system primarily regulates bodily functions through the secretion of: (a) Neurotransmitters (b) Hormones (c) Antibodies (d) Enzymes
सही उत्तर: ख) (b) Hormones
The endocrine system uses hormones, chemical messengers secreted directly into the bloodstream, to regulate various bodily functions. Neurotransmitters are used by neurons, antibodies are part of the immune response, and enzymes catalyze biochemical reactions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following correctly describes the role of mitochondria? (a) Synthesis of proteins. (b) Storage of genetic information. (c) Production of energy (ATP) through cellular respiration. (d) Transportation of materials within the cell.
सही उत्तर: ग) (c) Production of energy (ATP) through cellular respiration.
Mitochondria are known as the 'powerhouses' of the cell because they generate ATP, the primary source of energy, through oxidative phosphorylation. Options (a), (b), and (d) describe other cellular functions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The process of phagocytosis is primarily carried out by which type of cell? (a) Erythrocytes (b) Lymphocytes (c) Macrophages (d) Neurons
सही उत्तर: ग) (c) Macrophages
Macrophages are specialized immune cells that engulf and destroy pathogens and cellular debris through phagocytosis. Erythrocytes are red blood cells, lymphocytes are involved in adaptive immunity, and neurons transmit nerve impulses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following statements accurately describes the process of osmosis? (a) The movement of solute molecules from a region of high concentration to a region of low concentration. (b) The net movement of water across a semi-permeable membrane from a region of high water potential to a region of low water potential. (c) The diffusion of oxygen from an area of high partial pressure to an area of low partial pressure. (d) The active transport of glucose molecules across the cell membrane against their concentration gradient.
सही उत्तर: ख) (b) The net movement of water across a semi-permeable membrane from a region of high water potential to a region of low water potential.
Osmosis is defined as the movement of water across a semi-permeable membrane from an area of higher water potential (less concentrated) to an area of lower water potential (more concentrated). Option (a) describes diffusion, option (c) describes oxygen diffusion, and option (d) describes active transport.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The primary product formed during the reaction of sodium metal with carbon dioxide is:
सही उत्तर: ख) Sodium bicarbonate
When sodium reacts with carbon dioxide, it forms sodium bicarbonate (Na₂CO₃). This is a classic example of a neutralization reaction between sodium (a base) and carbonic acid (derived from CO₂). Option A is incorrect as it would require prior production of carbonate. Options C and D are not formed in this process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following will increase the rate of a hydrolysis reaction?
सही उत्तर: घ) D. Removing a catalyst
Increasing the concentration of a base (Option C) provides more hydroxide ions, which are responsible for the hydrolysis process (acid + base -> salt + water). Option A would slow down hydrolysis, and options B and D are incorrect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The oxidation number of chromium (Cr) in Cr₂O₇²⁻ ion is:
सही उत्तर: ग) +6
In the Cr₂O₇²⁻ ion, there are two chromium atoms. To balance the charge of -2, each chromium atom must have an oxidation number of +6. This result can be calculated by summing up the oxidation numbers on both sides of the equation: 2(+x) + 7(-2) = -2. Option A is incorrect as it does not consider the balanced charge. Options D is also incorrect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following statements accurately describes the effect of increasing temperature on reaction rates?
सही उत्तर: ख) B. Reaction rates decrease with increasing temperature as reactants require more energy to overcome activation energy barriers
Option B is correct. Increasing temperature provides reactant molecules with greater kinetic energy, leading to more frequent and forceful collisions with sufficient energy to overcome the activation energy barrier. Option A is incorrect because it states an increase without considering the impact of this increased energy on reaction rates. Options C and D are demonstrably false.
💬 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।