ice point reference

The Circle of Reference - The above figure shows a body moving with uniform speed along a circle. Let perpendiculars be drawn from different positions of the body onto any diameter, say the vertical diame..

What is the melting point of ice? => 0 o C or 100 o C or - 10 o C or - 4 o C..

The experiment illustrated in figure shows the effect of pressure on the melting point of ice. A thin copper wire passes round a large block of ice and two weights are attached to the free ends of the wire. The pressure of the wire lowers the melting point o..

>As a result of tetrahedral arrangement of H 2 O molecules in the solid state, the ice structure extends in three dimensions. Further the molecules of H 2 O are not packed closely as hydrogen bonds between oxygen and H atoms are longer than covalent bonds between them. This results in vac..

Refer the figure to answer the questions. (i). Are the points B, C and D collinear? (ii). Name any one plane. => (i) yes (ii) plane BAD or (i) yes (ii) plane BDE or (i) no (ii) plane EGF or (i) no (ii) no planes in the figure..

Coordinates - The coordinates of a point are quantities, which determine the position of the point. If for instance, a point P lies somewhere on a straight line XX', then its position may be defined by a single number in the following way: Choose some reference..

Compensation Point - At a given low concentration of CO 2 and non-limiting light intensity, the photosynthetic rate of a given plant will be equal to the total amount of respiration. The atmospheric concentration of CO 2 at which photosynthesis just compensates for respiration is ref..

Melting point of pure ice at normal atmospheric pressure is regarded as the lower fixed point. ..

Iso-electric Point - It is defined as the point at which a molecule exists as zwitter ion with no net charge. Thus, at this point the molecule is electrically neutral. The molecules have minimum solubility, maximum precipitability and least buffer capacity. The acidic ..

To devise a scale of temperature, fixed reference points (temperature) are required, with respect to which all other temperatures are measured. For both Celsius and Fahrenheit Scales of temperatures, the fixed points are as follo..