Biology - Mock Test 279

Question 2781

The undesirable change in physical, chemical or biological characteristics of air, land and water is referred as?

A) pollutants B) ecodestructions C) pollution D) all of these

---

No Details

Question 2782

Noise is measured using sound meter and the unit is?

A) hertz B) decibel C) joule D) sound

---

No Details

Question 2783

Cement factory labourers are prone to?

A) leukemia B) bone marrow disease C) asbestosis D) cytosilicosis

---

No Details

Question 2784

5th June is observed as?

A) world forest day B) world environment day C) world wildlife day D) world population day

---

No Details

Question 2785

A river with high BOD value is?

A) highly polluted B) highly clean C) highly productive D) none of these

---

No Details

Question 2786

BOD stands for?

A) biotic oxidation demand B) biological oxidation demand C) biological oxygen demand D) biochemical oxygen demand

---

No Details

Question 2787

Minamata disease was caused by pollution of water by?

A) mercury B) lead C) tin D) methyl iso cyanate

---

No Details

Question 2788

Which of the following is the major cause of pollution?

A) plants B) man C) fungi D) hydrocarbon gases

---

No Details

Question 2789

The meristem which occurs between mature tissues is known as _________meristem?

A) Intercalary B) Primary C) Lateral D) Apical

---

No Details

Question 2790

Panda belongs to the same family as that?

A) kangaroo B) Porcupine C) Wahle D) Bear

---

No Details