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: Vibrational motion only
Explanation In solids, particles mainly exhibit vibrational motion about their fixed positions . They have limited translational and rotational motion compared to liquids and gases.
Answer: Rate = K[A][B]³
Explanation Given: - Order w.r.t A = 1 - Order w.r.t B = 3 Rate law is written as: Rate = k [A]^1 [B]^3
مندرجہ ذیل میں سے کون سا انزائم نشاستے کے ہائیڈولیسس کو شکر میں تبدیل کرتا ہے؟
Answer: Amylase
Explanation Amylase is an enzyme that catalyzes the hydrolysis of starch into sugars. All amylases are glycoside hydrolases. It is used in breadmaking. Additional information: Protease: is an enzyme that catalyzes proteolysis. Lipase: Is an enzyme that catalyzes the hydrolysis of fats. Peptidase: is an enzyme that breaks down peptides into amino acids.
Answer: carbohydrates & proteins
Explanation The cell wall of prokaryotes is made of carbohydrates and proteins. The compound is peptidoglycan or mucopeptide in which a short peptide is attached to murein or muramic acid.
آپ کی گاڑی اور آپ کے سامنے والی گاڑی کے درمیان محفوظ فاصلہ ہے:
Answer: 60 meters
Explanation The safe distance between your vehicle and the vehicle in front of your's is 60 meters
Answer: Temperature
Explanation It is the total heat content of a system when the pressure is constant. It helps us understand energy changes in chemical reactions.
Answer: 500
Explanation To find the self-inductance of a coil, we can use the formula: L = (ΔΦ / ΔI) Where: L is the self-inductance in Henry (H), ΔΦ is the change in magnetic flux in Weber (Wb), and ΔI is the change in current in Ampere (A). In this case, the current changes from 5A to 0A (nil) in 5 seconds . (ΔI) is therefore 5A - 0A = 5A. To find the change in (ΔΦ), we can use Faraday's law of electromagnetic induction ΔΦ = L * ΔI Since the current changes from 5A to 0A in 5 seconds , the rate of (ΔI) is 5A / 5s = 1A/s. Substituting the values into the equation: ΔΦ = L * ΔI 500 V = L * 1 A/s Since the (V) is equal to (L) and (ΔI), we can rewrite the equation as: L = 500 V / 1 A/s Simplifying the equation gives us: L = 500 H Therefore, the self-inductance of the coil is 500 Henry (H).
مندرجہ ذیل میں سے سبھی کوولینٹ نیٹ ورک کے کرسٹل ہیں سوائے اس کے؟
Answer: S8
Explanation SiO₂, Graphite, and Diamond have covalent network structures, where atoms are bonded in a continuous network. S₈ is a molecular crystal , consisting of discrete S₈ molecules held together by weak Van der Waals forces.
Answer: AUG
Explanation AUG is the start codon in mRNA that signals th e beginning of protein synthesis. It codes for the amino acid Methionine in eukaryotes. During translation, ribosomes recognize AUG to initiate protein assembly. Stop codons like UAA, UAG, and UGA signal the end of translation.
Answer: Octahedral
Explanation The molecular Geometry of SF6 (sulfur hexafluoride) is octahedral . In this molecule, the central atom i.e. sulphur has a total of six electrons in its valence shell And in the molecule, we have six fluorine atoms so it shares one electron with each fluorine atom. So this molecule has six bond pairs and no lone pair. So its structure is octahedral The bond angles in sulfur hexafluoride molecules are 90A∘ and 180A∘.
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