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Subject

Chemistry

NEET Chemistry : રસાયણવિજ્ઞાનના પાયાના સિદ્વાંતો

Multiple Choice Questions

11. એક પદાર્થની ઘનતા $bold 12 bold times bold 6 bold space bold g bold divided by bold cm to the power of bold 3$ છે. આ પદાર્થની ઘનતા કિલોગ્રામ પ્રતિ લિટરમાં શોધો.

$12 times 6$
$1 times 26$
$12600$
$126000$

12. $bold 10 to the power of bold 12 bold space bold μg$ બરાબર કેટલા Gg થશે ?

10³
10^-3
10³¹
10^-5

13.

બે પ્રવાહીના ઉત્કલનબિંદુમાં $bold 18 bold space bold degree bold F$ નો તફાવત છે. જો એક પ્રવાહીનું ઉત્કલનબિંદુ $bold 111 bold space bold degree bold C$ હોય, તો બીજા પ્રવાહીનું ઉત્કલનબિંદુ શોધો.

$103 times 2 degree space straight C$
$101 degree space straight C$
$118 times 2 degree space straight C$
$93 degree space straight C$

14. $bold 1 bold times bold 8 bold space bold cross times bold space bold 10 to the power of bold minus bold 2 end exponent bold space bold km$ ને સેન્ટિમીટરમાં ફેરવો.

180
18000
1800
180000

1800

1.8 space cross times space 10 to the power of negative 2 end exponent space straight k space straight m equals space 18 space space straight m space equals space 1800 space cm space space space space space space space space space space space space space space space space space space

1.8 space cross times space 10 to the power of negative 2 end exponent space straight k space straight m equals space 18 space space straight m space equals space 1800 space cm space space space space space space space space space space space space space space space space space space

15. 0 $times$ 00506ને વૈજ્ઞાનિક નોટેશન પદ્વતિ અનુસાર કેવી રીતે દર્શાવાય ?

$bold 0 bold times bold 0506 bold space bold cross times bold space bold 10 to the power of bold minus bold 1 end exponent$
$bold 5 bold times bold 06 bold space bold cross times bold space bold 10 to the power of bold 3$
$bold 50 bold times bold 6 bold space bold cross times bold space bold 10 to the power of bold minus bold 4 end exponent$
$bold 5 bold times bold 06 bold space bold cross times bold space bold 10 to the power of bold minus bold 3 end exponent$