Questions

A river which can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps.

Here in the given options, Gold is a malleable substance.

Malleable substance means a metal or a material able to be hammered or pressed into shape without breaking or cracking. i.e, tensile.

Here Soda is a Heterogenous Mixture.

A Heterogeneous Mixture is a mixture having a non-uniform composition i.e, the mixture contains components in different phases. Using various means, the parts in the mixture can be separated from one another.

The first identification of Nipah virus as a cause of an outbreak of encephalitis was reported in 2001 in Meherpur district of Bangladesh. Since, then Outbreaks of the deadly Nipah virus has been recorded almost every year in selected districts of Bangladesh.

Drinking raw date palm sap and contact with a case were identified as the major risk factors for acquiring the disease.

Let length and breadth of rectangle be L cm
and B cm respectively So, ATQ
Area1= (L-6)×B
But this is square, so L-6=B
Area1= (L-6) × (L-6)
Case 2, Area2= L × (B+6),
L=B+6
So, Area2= L × L,
Given, Area2-Area1= 252(L)2-(L-6)2=252
Solving this, L= 24
B= 18
Perimeter= 2(L+B)= 2(24+18)= 84 cm

W is the symbol for chemical element Tungsten or Wolfram.

It is used in making filaments of bulbs.

High frequency sound attacks the tympanic memberane and makes it defective. 120 decibles is too high a pitch to be heard and therefore it impairs the hearing ability.

Dehydration is a loss of body fluid that impairs normal bodily functions. Serious dehydration may cause muscle cramps, reduced blood volume and increased heart rate.