1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Consider the following reaction :

AIPMT 2009 Chemistry - Alcohol, Phenols and Ethers Question 26 English
the product Z is
A
CH3CH2 $$-$$ O $$-$$ CH2 $$-$$ CH3
B
CH3 $$-$$ CH2 $$-$$ O $$-$$ SO3H
C
CH3CH2OH
D
CH2$$=$$CH2
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Oxidation numbers of P in PO$$_4^{3 - }$$, of S in SO$$_4^{2 - }$$ and that of Cr in Cr2O$$_7^{2 - }$$ are respectively
A
+3, +6 and +5
B
+5, +3 and +6
C
$$-$$3, +6 and + 6
D
+5, +6 and +6
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The electric field part of an electromagnetic wave in a medium is represented by Ex = 0;

$${E_y} = 2.5{N \over C}\cos \left[ {\left( {2\pi \times {{10}^6}{{rad} \over m}} \right)t - \left( {\pi \times {{10}^{ - 2}}{{rad} \over s}} \right)x} \right];$$

Ez = 0.
A
moving along x direction with frequency 106 Hz and wavelength 100 m.
B
moving along x direction with frequency 106 Hz and wavelength 200 m.
C
moving along $$-$$x direction with frequency 106 Hz and wavelength 200 m.
D
moving along y direction with frequency $$2\pi \times {10^6}\,Hz$$ and wavelength 200 m.
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it ?

AIPMT 2009 Physics - Current Electricity Question 76 English
A
$${\varepsilon _2} - {i_2}{r_2} - {\varepsilon _1} - {i_1}{r_1} = 0$$
B
$$ - {\varepsilon _2} - \left( {{i_1} + {i_2}} \right)R + {i_2}{r_2} = 0$$
C
$${\varepsilon _1} - \left( {{i_1} + {i_2}} \right)R + {i_1}{r_1} = 0$$
D
$${\varepsilon _1} - \left( {{i_1} + {i_2}} \right)R - {i_1}{r_1} = 0$$
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