the above statement is false

because they are infra-sonic whistle specially meant for dogs

because they are ultra-sonic whistle specially made for dog

none of the above.

between 20 Hz to 20 kHz

below 20 kHz

equal to 20 kHz

above 20 kHz

superposition principle

echo

both of the above

none of these

Research Department eXplosive

Recursive Detonating eXplosive

Reactive Detonation eXplosive

None

Tetra Nitrous Timber

Tetra Nitrous Toluene

Tri Nitro Toluene

Tri Nitrous Timber

Lead Silver Drug

Lysergic acid Diethylamide

Lysergic Silver Drug

None

Low Hydro Collector

Large Hydro Collider

Large Hadron Collider

Large Hydro Collector

Special Warfare Action Team

Special Weapons and Tactics

Special Weapon Action Threat

None

Integrated Electronics

Intelligent Telephonics

Iowa National Engineering Laboratory

None

Penn American Graphics

Pacific Northwest Graphics

Portable Network Graphics

PNG's Not Gif

Komitet Gosudarstvennoi Bezopasnosti

Keighley Grouse Beaters

Komitet Grand Bureau

Komitet Generale Bureau

Mail In Mail Enhancements

Multipurpose Internet Mail Extensions

Multi Intra Mail Errors

Mail Internet Machine Ethernet

Last Tamil Tigers of Ernakulam

Last Terror Tigers Eelam

Liberation Tigers of Tamil Eelam

Last of Tamil Tigers Eelam

3

5

4

6

chlorine

flourine

astatine

radon

iodine

joule

calorie

kilo-watt

kilo-watt hour

Malaria

Typhoid

Dengue

Tuberculosis

Disc

Circular

Spiral

Irregular

N = N*fp*ne*fl*fi*fc*fL

x^n = y^n + z^n , n>2

(a+b)/a = a/b

(a*b)/(c*d) = 1/a/b/c/d

Unit of distance

Unit of speed

Unit of time

Nothing