Related Questions

The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 degree . If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise -up to 10 cm in the tube and will over flow
D Will neither rise nor fall in the tube.
The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 Degree. If the capillary tube is dipped vertically in the liquid, then the liquid:
A Will rise in the tube
B Will get depressed in the tube
C Will rise-up to 10 cm in the tube and will over flow
D Will neither rise not fall in the tube
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
জলজ উদ্ভিদে সালোকসংশ্লেষণের হার বেশি কারণ-i. পানিতে CO2 এর পরিমাণ 0.3%ii. সকল অঙ্গ CO2, শোষণ করতে পারেiii. CO2, ও O2, এর পরিমাণ সমাননিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i,ii ও iii
জলজ উদ্ভিদে সালোকসংশ্লেষণ হার বেশি কারণ-i. পানিতে CO2 এর পরিমাণ 0.3%ii. সকল অম্ল CO2 শোষণ করতে পারেiii. পানিতে , ও CO2 এর পরিমাণ সমাননিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
গ্রিন হাউজ গ্যাসসমূহ হলো-i. CO2 CH4, O2ii. CO2 CH4 N2Oiii. CO2 O2 N2Oনিচের কোনটি সঠিক?
A ii
B i ও iii
C ii ও iii
D i, ii ও iii
If Net Sales is Tk. 1,20,000. Net Profit is Tk. 48,000 and Average Asset is Tk. 150,000 then which of the following is the Net Profit Margin
A 40%
B 50%
C 55%
D 60%
Attention is most often focused on net exports because that figure measures the net effect of a nation's trade in goods and services with the rest of the world . In 2000, net exports were 5.8% of GNP and in 2005, they were 6.8% . If the information above
A Exports were greater than imports in 2005, but not in 2000.
B Exports increased from 2000 to 2005
C In 2005, the increased in Exports was nearly double of that in 2000.
D In 2000, net exports were gerater than in 2005.
In chronic obstructive pulmonary disease COPD there is a decrease in-
A Vital capacity
B FEV1
C The ratio of FEV1/FVC
D Total lung capacity
E Functional residual capacity
In case of chronic obstructive pulmonary diseases, there is a decrease in
A FVC
B FEV1
C FEV1/FVC
D RV
E FRC

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