Methyl alcohol is not used as___________________? April 15, 2025 by admin A. a solvent B. an anti freezing agent C. a substitute for petrol D. for denaturing of ethyl alcohol
Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ? April 15, 2025 by admin A. 20cm3/min B. 40cm3/min C. 160cm3/min D. 2.5cm3/min
As a substance moves from a solid to a liquid all of the following changes occur except ? April 15, 2025 by admin
The rectified spirit is________________? April 15, 2025 by admin A. 12% alcohol B. 90% alcohol C. 95% alcohol D. 100% alcohol
Which of the following solids show anisotropy___________________? April 15, 2025 by admin A. Plastic B. Glass C. Rubber D. None of the above
Metallic crystals are soluble in________________? April 15, 2025 by admin A. Polar solvent B. Non polar solvent C. Fused metal D. None
Paramagnetic behaviour of substance is measured by a balance called___________________? April 15, 2025 by admin A. Analytical balance B. Guoys balance C. Electrical balance D. Single beam balance
Which of the following properties prove that cathode rays are material in nature_________________? April 15, 2025 by admin A. they cast shadow B. they possess momentum C. they are negatively charged D. all of the above
When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________? April 15, 2025 by admin A. 0.33 nm B. 0.34 nm C. 0.35 nm D. 0.36 nm
