GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 041

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 041 

 

401). Which of the following is not present in cement?
A). Clay
B). Alumina
C). Alum
D). Gypsum

Answer: Alum


  
402). Which raw material is used in the preparation of soft glass ?
A). K2CO3,SiO2,CaCO3
B). K2CO3,SiO2,PbCO3
C). Na2CO3,SiO2,CaCO3
D). Na2CO3,SiO2,PbO

Answer: K2CO3,SiO2,CaCO3


  
403). Which one of the following is not a nitrogenous fertilizer?
A). Ca(CN)2
B). CaCN2
C). NH4NO3
D). Urea

Answer: Ca(CN)2


  
404). Flint glass is obtained from which of the following:
A). Zinc and barium borosilicate
B). Sand, red lead and potassium carbonate
C). Sodium aluminium borosilicate.
D). Pure silica and zinc oxide

Answer: Sand, red lead and potassium carbonate


  
405). Which one of the following is the correct order in which the gases H2, Ne, 02 and N2 are evolved on fractional distillation of liquid air?
A). H2,Ne,O2,N2
B). H2,Ne,N2,O2
C). N2,O2,Ne,H2 

D). O2,N2,H2,Ne

Answer: H2,Ne,N2,O2


406). Consider the following : The concentration of hydrogen ions in an aqueous solution is expressed by its
1. pH
2. pOH
3. pKa
4. pKw
Which of the above is/are correct?
A). 1 and 2 Only
B). 1 and 3 only
C). 1, 2 and 3
D). 2, 3 and 4

Answer: 1 and 2 Only


  
407). Which one of the following correctly defines the state of glass?
A). Crystalline solid
B). Super cooled liquid
C). Condensed gas
D). Liquid crystal

Answer: Super cooled liquid


  
408). Match List I with List II and select the correct answer using the code given below the lists:
List I (Substance added )                List II (Color imparted to glass )
A. Chromium (III) oxide                             1. Red
B. Cobalt (II) oxide                                    2. Violet
Cuprous oxide                                           3. Green
D. Manganese dioxide                                4. Blue

Below code is given in order A B C D
A). 2 1 4 3
B). 3 4 1 2
C). 3 1 4 2
D). 2 4 1 3

Answer: 3 1 4 2


  
409). Which one of the following is the correct order of oxidation number of Iodine (I) in I2,HI,HIO4andICL

A). HIO4<HI<ICL<I2
B). HI<I2<ICL<HIO4
C). I2<ICL<HIO4<HI
D). ICL<HIO4<HI<I2

Answer: HI<I2<ICL<HIO4



  
410). Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?
A). Oxygen
B). Chlorine
C). Fluorine
D). Carbon

Answer: Fluorine