Of the following metals which, one pollutes the air of a big
city?

1 Copper

2 Chromium

3 Lead

4 Cadmium

Answer Posted / guest

(3) Lead

Is This Answer Correct ?    62 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

iwant to learn robotics so how can iproceed

1481


is the big bang theory correct, because as I wondered the explosion is too powerful that no one could survive after galaxies were created no life exist on it after the 3.5 billion years life exist so... my question is were is the life came from?

1653


What is the work of a patent engineer? Does the experience in working as patent engineer helps in finding a job in a refinery?

5014


Dear Sir I have got through cable size calculation 10 sq mm cable size of one panel, how i be sure that used cable is 10sqmm. a) By measuring each strand of cpper & multilpy by pye and so on...... or By measuring any one cable core with insulation only.

1436


Name any two modern branches of Physical Science

665






Explain the Evolution of Science as a discipline in the Medieval Period

636


What are the important factors of cosmic rays?

639


171.116.0.0 VLSM require 112 ip addresses answer = 128/23 255.255.254.0 rang 2 network address 172.116.0.0 gateway 172.116.1.0 broadcast 172.116.127.0

2274


Why is ice wrapped in gunny sacks to prevent it from melting

2374


Which scientists gave detailed information about nebula?

688


what are advantages of excess populatoin?

2093


The country helped in arihant’s built?

639


Which are the wings of sri harikotah range ( shar )?

615


Names of some plants and trees that sleep during the day

4562


In which year, atmospheric observations using balloons started?

610