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Purines and pyrimidines are_________________?
A. Enzymes B. Nitrogenous bases C. Carbohydrates D. Lipids Submitted by :- Jamil Ahmed
Which of the following element does not show allotropy_________________?
A. Carbon B. Arsenic C. Nitrogen D. Sulphur Submitted by :- Jamil Ahmed
Benzene is a good solvent for__________________?
A. fats B. resins C. iodine D. all the above Submitted by :- Jamil Ahmed
If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature axis at________________?
A. 0 °C B. 273.16K C. -273.16 K D. -273.15 °C or 0 Kelvin. Submitted by :- Jamil Ahmed
When aqueous bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
A. phenol is unsaturated B. 2-bromophenol is insoluble in water C. a hydroxy group makes the benzene ring more susceptible…
The unit of the rate constant (k) is same as that of rate of reaction________________?
A. First order reaction B. Second order reaction C. Zero order reaction D. Third order reaction Submitted by :- Jamil…
Which of the following elements react with steam to produce H2 gas?
A. Pd B. Ni C. Sn D. All of the above Submitted by :- Jamil Ahmed
Consider the following redox reaction. Zn+dil HNO3 Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?
A. 6 B. 8 C. 1 D. 4 Submitted by :- Jamil Ahmed
A solution can be both____________________?
A. dilute and concentrated B. dilute and saturated C. saturated and unsaturated D. saturated and super saturated Submitted by :-…
The unit of molality is__________________?
A. moles dm-3 B. moles kg-1 C. gram dm-3 D. none Submitted by :- Jamil Ahmed