MCQ
Primary treatment is the
- ✓physical removal of large and smallparticles from sewage
- Bbiological removal of large and smallparticles from sewage
- CBoth $(A) $ and $ (B)$
- Dchemical removal of large and smallparticles from sewage
✓
Answer
Correct option: A.
physical removal of large and smallparticles from sewage
a
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Consider the following statements :
→$A$. Annelids are true coelomates $B$. Poriferans are pseudocoelomates
$C$. Aschelminthes are acoelomates $D$. Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below :
Delete odd one.
In humans, the excretory system consists of a pair of kidneys, one pair of ureters, a urinary bladder and a urethra. Select correct option for kidneys:
(i) Kidneys are oval- shaped structures which are situated between the levels of last thoracic and third lumbar vertebra.
(ii) Through hilum ureter, blood vessels and nerves enter in kidney.
(iii) Inner to the hilum is a broad funnel – shaped space called the renal pelvis with projections called calyces.
(iv) The outer layer of kidney is a tough capsule.
(v) The medulla is divided into a few pyramids projecting into the calyx.
(vi) The medulla extends in cortex called columns of Bertini.
(i) Kidneys are oval- shaped structures which are situated between the levels of last thoracic and third lumbar vertebra.
(ii) Through hilum ureter, blood vessels and nerves enter in kidney.
(iii) Inner to the hilum is a broad funnel – shaped space called the renal pelvis with projections called calyces.
(iv) The outer layer of kidney is a tough capsule.
(v) The medulla is divided into a few pyramids projecting into the calyx.
(vi) The medulla extends in cortex called columns of Bertini.
A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately, which one of the blood groups readily available in the hospital will be safe for transfusion?
Consider the following statements.
i. In microinjection method, foreign DNA is directly injected into the nucleus of animal cell or plant cell by using microneedles or micropipettes.
ii. Microinjection method is used in oocytes, eggs, and embryo.
iii. Electroporation is the formation of temporary pores in the plasma membrane of host cell by using lysozyme or calcium chloride.
iv. In chemical mediated gene transfer method, certain chemicals such as $Ca ^2+$ help foreign DNA to enter the host cell.
Which of the statements given above are correct?
→i. In microinjection method, foreign DNA is directly injected into the nucleus of animal cell or plant cell by using microneedles or micropipettes.
ii. Microinjection method is used in oocytes, eggs, and embryo.
iii. Electroporation is the formation of temporary pores in the plasma membrane of host cell by using lysozyme or calcium chloride.
iv. In chemical mediated gene transfer method, certain chemicals such as $Ca ^2+$ help foreign DNA to enter the host cell.
Which of the statements given above are correct?
Which of the following statement(s) is/are correct about nervous system of cockroach?
i. It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
ii. There are six ganglia which lie in the thorax, and three in the abdomen.
iii. The sense organs are antennae, eyes, maxillary pulps, labial pulps, and anal cerci etc.
iv. Each eye consists of about 5000 hexagonal ommatidia.
i. It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
ii. There are six ganglia which lie in the thorax, and three in the abdomen.
iii. The sense organs are antennae, eyes, maxillary pulps, labial pulps, and anal cerci etc.
iv. Each eye consists of about 5000 hexagonal ommatidia.
The figure shows a human blood cell. Identify it and give its characteristics.
Given below are two statements:
→Statement $I:$ Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
Statement $II:$ The cavity of the cervix is called cervical canal which along with vagina forms birth canal.
In the light of the above statements, choose the correct answer from the options given below:
If the pace maker is absent
Multipolar neurons are found in the