Practise Branch of Science MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Branch of Science through multiple-choice questions in Everyday Science. This subtopic contains 2513 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
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Answer: None of these
Explanation The SN1 reaction mechanism involves the formation of a carbocation intermediate, which is favored by the presence of a good leaving group and a stable carbocation. None of the options listed (toluene, nitrobenzene, or benzoic acid) are typically associated with undergoing SN1 reactions
Answer: Negative
Explanation The temperature coefficient of resistance indicates how the resistance of a material changes with temperature. In semiconductors, as temperature increases , more charge carriers (electrons and holes) become available, so resistance decreases. Therefore, the temperature coefficient is negative.
Answer: Negative
Explanation The total energy of a hydrogen atom in its ground state is negative. The energy of a hydrogen atom in its ground state is typically represented as -13.6 eV. A negative energy value indicates that the electron is bound to the nucleus and requires energy to be overcome to escape. The ground state is the lowest energy level an electron can occupy in a hydrogen atom.
Answer: Same
Explanation - Current is the same through all resistors connected in series. - Total resistance (R_total) = R₁ + R₂ + R₃ + ... (sum of all resistances). - Voltage divides across each resistor according to their resistance (Ohm’s law: V = IR). - If one resistor breaks, the entire circuit stops working (open circuit). - Series circuits have only one path for current flo w.
Answer: M
Explanation The M shell has 3 subshells : 3s, 3p, and 3d. The K, L, and N shells have 1, 2, and 4 subshells, respectively. Specifically, K has 1s, L has 2s and 2p, and N has 4s, 4p, 4d, and 4f.
ویکسولوجی کس کا مطالعہ ہے؟
Answer: Flags
Explanation Vexillology is the study of flags . Vexillology comes from the Latin word vexilla "little sail" for flag . Vexillology means جھنڈوں کا مطالعہ
Answer: Halophiles
Explanation Halophiles are archaea that thrive in extremely salty environments like the Dead Sea, So they are the most prevalent type of archaea found there
شعور کیا ہے؟
Answer: see the answer in detail
Explanation Question: What is consciousness? 5 marks Definition : the word ' consciousness ' describes perceptual awareness or self-awareness of your unique thoughts, memories, feelings, sensations, and environments the content of consciousness mainly originates from the hindbrain. Types of Consciousness Dreams. Hallucinations. Hypnosis. Meditation. Sleep. States induced by psychoactive drugs. Different levels of human Consciousness Sigmund Freud divided human consciousness into three levels of awareness . Each of these levels corresponds and overlaps with his ideas of the id, ego, and superego. the conscious preconscious, and unconscious. Five levels of Consciousness There are five levels of consciousness: Conscious (sensing, perceiving, and choosing) Preconscious (memories that we can access) Unconscious ( memories that we can not access) Non-conscious ( bodily functions without sensation) and Subconscious ( “inner child,” self-image formed in early childhood). ND23-2-2023
Answer: Prolactin
Explanation The most important hormone in initiating and maintaining lactation after birth is prolactin . Prolactin is the hormone responsible for stimulating milk production in the breasts.
آپتھلمولوجی ____ کا مطالعہ ہے؟
Answer: Eyes
Explanation Ophthalmology is the study of the eye's anatomy, physiology, and diseases. It is also includes the study of vision disorders and eye surgeries.
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