The higher STC rating, the better sound isolation the wall is to achieve across all frequencies c. TL is dependent on frequency d STC is dependent on frequency e STC value is unitless | 19) Which among the following condition is true at the resonance? A plain 10 is dimensionless and (I suppose) unitless in the sense that you can attach any dimension and, once you do that, you can attach any unit. Which of the following is unitless quantity? The mass of a box measured by a grocer’s balance is 2.3 kg. The empirical formula and molecular mass of a compound are CH20 and 180g respectively. Like \(K\), \(K_p\) is a unitless quantity because the quantity that is actually used to calculate it is an “effective pressure,” the ratio of the measured pressure to a standard state of 1 bar (approximately 1 atm), which produces a unitless quantity. The following operators are supported in parameters and dimension edit boxes. 5.1k views. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Explanation: formulamass is a unitless. 6.4k VIEWS. In a molar ratio, each unitless value is expressed relative to a standard for that experiment. That is, elements that are set to display: inline or display: inline-block.This property is most often used to set the leading for lines of text.. p { line-height: 1.5; } The line-height property can accept the keyword values normal or none as well as a number, length, or percentage. Hydrogen gas is prepared in the laboratory by reacting dilute HC1 with granulated zinc. Which of the following terms are useful for describing the luster of nonmetallic minerals? 1answer. True or False? New questions in … Which of the following statements are false? Define parameter name and value. Which of the following terms are unitless? Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. 1:05 100+ LIKES. A mineral with a lower Mohs Hardness number will scratch a mineral with a higher Mohs Hardness number. (a) Molality (b) Molarity (c) Mole fraction (d) Mass per cent. d)normality 9. Which of the following statements about “Life Without Gravity” explains why it is an expository essay? Which of the following terms are unitless ? A unitless quantity (a) never has a nonzero dimension, askedApr 27, 2018in Physicsby paayal(147kpoints) introduction of physics. ris unitless -1
STATEMENT-2 A constant may not be unitless. Which of the following terms refers to legal protection provided against copying, distributing, performing, or changing both published and unpublished works? b. Which of the following terms are unitless ? This constant is known as open circuit conductance. Usually, the next step, if there is one, is to specify what kind of beast this "10" is, e.g. If t refers to time in seconds and x refers to distance in meters, what must the units of k be? Notice that the unit of A is unitless and hence called voltage ratio. The same concept is used for other units. 1:01 000+ LIKES. Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Language Arts. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. Network Theory objective questions (MCQs) and answers for competitive & university exams. B) The units of K depend on the coefficients in the balanced equation. From equation (2), C = Is / V R. From the above expression of constant C, it is clear that, the unit of C is Mho. Which of the following statements is/are correct? What will be the molecular formula of the compound. 1.7k SHARES. Case (2): When receiving end is shorted. 1answer. Which of the following statements is true? 2:51 2.1k LIKES. a. A unitless quantity never has a non zero dimension, explain? Which of the following quantity is unitless ? manishbishnoi0387 manishbishnoi0387 Answer: Formula Mass. Correct Option: A The electromagnetic spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.So among the given options, visible lights has the lowest frequency, while gamma rays has the highest. Answers (1) I infoexpert22. Which of the following reactions is not correct according to the law of conservation of mass? Now, it is defined in terms of the common (base 10) logarithm of a power ratio (output power divided by input power): The Bel is Nonlinear. Which of the following terms are unitless? Chapter 01: Chapter 1 of Chemistry Examplar Problems (EN) book - I. Which of the following terms are unitless? False 3. Tutorial of solved problems for oral viva questions & lab exam. * 3.50 x 6.02x1023… D) K is unitless because the pressures or molarities in the equilibrium constant expression are unitless activities. a. Reactance b. Susceptance c. Resistance d. All of the above. Multiple Choice Questions (Type-I) 1. The motion of a vibrating system is described by the function y(x, t) = A0e^(-at)sin(kx-ωt). Select ALL that apply. Login. The equal sign separates the parameter name from the value. Tip: For best results, include units for every term and factor in the expression. Differentiate solids, liquids and gases in terms of volume and shapes. a) molality. For instance, serine has a molar ratio of 3.0 × 10-2, meaning that for every mole of glycine, there is 3.0 × 10-2 mole of serine present in the sample. class-12. Q22. A unitless quantity (a) never has a nonzero dimension, (b) always has a nonzero dimension, (c) may have a nonzero dimension, (d) does not exist. 1.7k VIEWS. Which of the following statements indicates that law of multiple proportions is being followed ? It is developed in the following Sections.In the following figures ( Figure 1) and ( Figure 2), a simple example appears in order to give an idea about the importance of the Astro-Atomic unitless " " used with other existing units in … Another common term encountered for both absolute and relative permittivity is the dielectric constant which has been deprecated in physics and engineering as well as in chemistry. (a) Molality (b) Molarity (c) Mole fraction (d) Mass per cent. asked Mar 5, 2018 in Class XI Chemistry by rahul152 (-2,838 points) Which of the following terms are unitless ? a. Vitreous b. Translucent c. Earthy d. Shiny e. Silky 2. Following reaction takes place: How many significant figures should be present in the answer of the following calculations ? 18) Which among the following get/s cancelled under the resonance condition in a.c. circuits, if inductive and capacitive reactances are in parallel? An example of a quantity that has a dimension … length, force, mass, etc. (Select all that apply.) Use "ul" for unitless terms. C) K is unitless because the units always cancel. a. Intangible property b. tangible property c. copyright****** d. intellectual property What is piracy? A) The equilibrium constant, K, has units of mol/L. Here, the standard is the number of moles of the amino acid glycine, which is set to a value of 1.0. An expression is evaluated according to the algebraic order of operations and default unit values. Because the bel is a logarithmic unit, it is nonlinear. (i) Molality (ii) Molarity (iii) Mole fraction (iv) Mass percent. The line-height property defines the amount of space above and below inline elements. 0 votes . Which of the following statements about the correlation coefficient r are true? To give you an idea of how this works, consider the following table of figures, comparing power losses and gains in bels versus simple ratios: unitless quantity (a) never has a nonzero dimension, (b) always has a nonzero dimension, (c) may have a nonzero dimension, (d) does not exist. Dimensionless quantities are widely used in many fields, such as mathematics, physics, chemistry, engineering, and economics. Which of the following terms are unitless ? Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. a. unitless quantity (a) never has a nonzero dimension, (b) always has a nonzero dimension, (c) may have a … Add two values to create the parameter DIST. some basic concepts of chemistry. As the receiving end is shorted, therefore load end voltage will be zero. TENSION EXAMPLE Tension is always a pulling force Tension is the same on both ends of a lightweight rope Example: Find the tension in the lightweight rope between the two masses if the two masses have the same acceleration and slide across a frictionless surface (assume the rope is massless) See the notes on Canvas for the solution to this problem which was done on the board in class Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). Which of the following pairs have the same number of atoms ? If two elements can combine to’form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio. In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned, also known as a bare, pure, or scalar quantity or a quantity of dimension one, with a corresponding unit of measurement in the SI of the unit one (or 1), which is not explicitly shown. Which of the following solutions have the same concentration ?
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