GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 105

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 105

1041). Bone ash is the chief source of
A). boron
B). phosphorous
C). carbon
D). silicon

Answer: phosphorous


   
1042). Isotopes can be detected by
A). Mass Spectrometer
B). U.V. Spectrometer
C). l.R.Spectrometer
D). N.M.R. Spectrometer

Answer: U.V. Spectrometer


   
1043). Compounds halving low melting points, low boiling points and behaving as not electrolytes are
A). electrovalent compounds
B). covalent compounds
C). co-ordinate compounds
D). complex compounds

Answer: covalent compounds


   
1044). The peak of atomic volume curve is occupied by
A). alkali metals
B). halogens
C). inert gases
D). alkaline earth metals

Answer: alkali metals


   
1045). The maximum numbers of electrons in subshells s,p,d,f are
A). 2, 6. 10, 14
B). 2,8,18, 32
C). 2, 6, 18, 32
D). 2, 8, 14, 32

Answer: 2,8,18, 32



1046). The age of rocks can be determined using
A). radio-cobalt
B). radio-carbon
C). radio-iodine
D). radio-phosphorous

Answer: radio-carbon


   
1047). Spiegeleisen is an alloy of
A). sulphur, iron & carbon
B). iron, magnesium and carbon
C). iron, manganese and carbon
D). selenium, iron and carbon

Answer: iron, manganese and carbon


   
1048). Tritium 1T^3 is
A). an isotope of titanium
B). an isotope of tungsten
C). a radio-isotope of hydrogen
D). an isotope of hydrogen

Answer: an isotope of hydrogen


   
1049). Which one of the following is radio active?
A). Phosphorous
B). Arsenic
C). Astatine
D). Carbon

Answer: Astatine


   
1050). Slaked lime is
A). CaO
B). CaCo3
C). Ca(OH)2
D). CaCl2

Answer: Ca(OH)2