The radio-active element used in heart pacemakers is ___________?
The radio-active element used in heart pacemakers is ___________?
A. Uranium
B. Deuterium
C. Plutonium
D. Radium
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The rate of reaction___________________?
The rate of reaction___________________?A. Increases as the reaction proceeds
B. Decreases as the reaction proceeds
C. Remains the same as the reaction proceeds
D. May decrease or increase as the reaction proceedsMethyl alcohol is not used__________________?
Methyl alcohol is not used__________________?A. As a solvent
B. As an antifreezing agent
C. As a substitute for petrol
D. For denaturing of ethyl alcoholWhich one is natron ?
Which one is natron ?A. Na2CO3
B. Na2CO3.10H2O
C. Na2CO3.H2O
D. NaHCO3Which one of the following is a buffer solution ?
Which one of the following is a buffer solution ?A. brine
B. blood
C. glue
D. solution of CuSO4The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?
The use of CaCl2 and PCl5 in the process of crystallization is as a____________________?A. oxidizing agent
B. reducing agent
C. drying agent
D. colouring agentThe IUPAC suffix used for _______ NC group?
The IUPAC suffix used for _______ NC group?A. Cyanide
B. Isocyanides
C. Nitrile
D. Carbylamines