- (A) center of gravity
- (B) center of buoyancy
- (C) center of pressure
- (D) metacentre
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- (A) linearly with radial distance
- (B) as the square of the radial distance
- (C) inversely as the square of the radial distance
- (D) inversely as the radial distance
- (A) contains pathogenic bacteria
- (B) consists of undesirable substances rendering it unfit for drinking and domestic use
- (C) is safe and suitable for drinking and domestic use
- (D) is contaminated
- (A) more depth
- (B) less depth
- (C) more discharge
- (D) less discharge
- (A) air relief valve
- (B) reflux valve
- (C) pressure relief valve
- (D) sluice valve
- (A) at a distance R from the well
- (B) close to the well
- (C) at a distance R/2 from the well
- (D) none of the above where R is the radius of influence
- (A) maximum daily demand
- (B) maximum hourly demand
- (C) average daily demand
- (D) maximum hourly demand on maxi¬mum day
- (A) 1.5
- (B) 1.8
- (C) 2.0
- (D) 2.7
- (A) gm/cm-sec2
- (B) dyne-sec/cm2
- (C) gm/cm2-sec
- (D) cm2/sec
- (A) pressure
- (B) kinematic viscosity
- (C) dynamic viscosity
- (D) surface tension
