Chemistry Mcqs No 5

There are 10 MCQS.Choose the best option that you find correct.Give all of your Answers in one comment (e.g :1A,2B,3C....)

(1) PAN ,an irritant to human beings, affects :
A. nose
B. skin
C. ears
D. eyes 

(2)All are calcareous except :
 A. lime
B. marble
C. clay
D. marine shell

(3) All are true about glucose and sucrose except :
A. Both are soluble in water
B. Both are carbohydrates
C. both are disaccharides
D. both are naturally occurring

(4) Acetamide is prepared by:
A. Heating ammonium acetate
B. Heating ethyl acetate
C. Hydrolysis of methyl cyanide
D. Heating methyl cyanide

(5) All compounds give iodoform test on treatment with I2/NaOH except
A. Acetaldehyde
B. Butanone
C. 3-pentanone
D. Acetone

(6) Glucose is converted into ethanol by a yeast enzyme ___.
A. Zymase
B. Invertase
C. Lymase
D. Maltase

(7)All of the following metals have low positive reduction potential values and liberate hydrogen from acids except :
A. Au
B. Pt
C. Ag
D. All

(8) The sum of mole fractions (X) of all components of a solution is always equal to
A. 100
B. 200
C. 1
D. 0

(9) For N2 + 3H2 <-----> 2NH3 thecorrect condition is :
A. Kc = Kp
B. Kp = Kc RT
C. Kp = Kc (RT)–2
D. Kp = Kc (RT)–1

10) A substance under observation during an experiment
A.Surrounding
B. System
C. State function
D. Universe