Formalin is ___________ solution of formaldehyde in water?
Formalin is ___________ solution of formaldehyde in water?
A. 10%
B. 20%
C. 40%
D. 60%
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If temperature of gallium arsenide is increased then its conductivity will___________________?
If temperature of gallium arsenide is increased then its conductivity will___________________?A. decrease
B. increase
C. remains constant
D. first decreases then increasesAn alcohol which can be prepared by fermentation is_________________?
An alcohol which can be prepared by fermentation is_________________?A. CH3OH
B. C3H7OH
C. CH3 – CH2 – OH
D. C6H5OHWhich one is false for evaporation ?
Which one is false for evaporation ?A. Surface phenomenon
B. Continuous
C. Exothermic
D. Cause coolingSabatier Senderns reaction involve _____________ in presence of Ni?
Sabatier Senderns reaction involve _____________ in presence of Ni?A. Aalkene & H2
B. alkene & O2
C. alkene & N2
D. alkyne & Cl2The chemical formula of sodium hypochlorite is________________?
The chemical formula of sodium hypochlorite is________________?A. NaCLO
B. NaClO2
C. NaClO3
D. NaClO4Energy of reactant higher than energy of product favours A. Endothermic_______________?
Energy of reactant higher than energy of product favours A. Endothermic_______________?B. Exothermic
C. Moderate reaction
D. No reaction