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2016 9 questions

Q612016 · 3 Apr 2016 · Shift 1
A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V esu. If e and m are charge and mass of an electron, respectively, then the value of h / $λ$ (where $λ$ is wavelength associated with electron wave) is given by :
1. A. $2 m e V$
2. B. $m e V$
3. C. $2 m e V$
4. D. $m e V$
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Answer: C
Q682016 · 3 Apr 2016 · Shift 1
Galvanization is applying a coating of :
1. A.Cr
2. B.Cu
3. C.Zn
4. D.Pb
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Answer: C
Q712016 · 3 Apr 2016 · Shift 1
Which of the following compounds is metallic and ferromagnetic ?
1. A. $Cr O_{2}$
2. B. $V O_{2}$
3. C. $Mn O_{2}$
4. D. $Ti O_{2}$
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Answer: A
Q742016 · 3 Apr 2016 · Shift 1
Thiol group is present in :
1. A.Cytosine
2. B.Cystine
3. C.Cysteine
4. D.Methionine
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Answer: C
Q762016 · 3 Apr 2016 · Shift 1
1. A. $(2 S, 3 S)$
2. B. $(2 R, 3 R)$
3. C. $(2 R, 3 S)$
4. D. $(2 S, 3 R)$
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Answer: D
Q782016 · 3 Apr 2016 · Shift 1
1. A.
2. B.
3. C.
4. D.
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Answer: D
Q802016 · 3 Apr 2016 · Shift 1
Which one of the following statements about water is FALSE?
1. A.Water is oxidized to oxygen during photosynthesis
2. B.Water can act both as an acid and as a base.
3. C.There is extensive intramolecular hydrogen bonding in the condensed phase.
4. D.Ice formed by heavy water sinks in normal water
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Answer: C
Q822016 · 3 Apr 2016 · Shift 1
The main oxides formed on combustion of Li, Na and K in excess of air are, respectively :
1. A. $Li O_{2}$ , $N a_{2} O_{2}$ and $K_{2} O$
2. B. $L i_{2} O_{2}$ , $N a_{2} O_{2}$ and $K O_{2}$
3. C. $L i_{2} O$ , $N a_{2} O_{2}$ and $K O_{2}$
4. D. $L i_{2} O$ , $N a_{2} O$ and $K O_{2}$
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Answer: C
Q902016 · 3 Apr 2016 · Shift 1
1. A.region 1
2. B.region 2
3. C.region 3
4. D.region 4
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Answer: B