Forwarded from Himanshi Singh lets learn
◀particle is moving in a circular path of radius r. The displacement after half a circle would be:
Anonymous Quiz
19%
(a) Zero
40%
(b) πr
30%
(c) 2r
11%
(d) 2πr
Forwarded from Himanshi Singh lets learn
❇Which of the following can be made into crystal?
Anonymous Quiz
21%
(a) A bacterium
20%
(b) An Amoeba
47%
(c) A virus
12%
(d) A sperm
Forwarded from Himanshi Singh lets learn
↗Chromosomes are made up of
Anonymous Quiz
19%
(a) DNA
12%
(b) Protein
67%
(c) DNA and protein
2%
(d) RNA
Forwarded from Himanshi Singh lets learn
↘Silver nitrate solution is used to study
Anonymous Quiz
28%
(a) endoplasmic reticulum
37%
b) golgi apparatus
23%
(c) nucleus
13%
(d) mitochondria
Forwarded from Himanshi Singh lets learn
🔸The only cell organelle seen in prokaryotic cell is
Anonymous Quiz
17%
(a) mitochondria
49%
(b) ribosomes
22%
(c) plastids
11%
(d) lysosomes
Forwarded from Himanshi Singh lets learn
↘Kitchen of the cell is
Anonymous Quiz
34%
(a) mitochondria
21%
(b) endoplasmic reticulum
33%
(c) chioroplast
12%
(d) golgi apparatus
Forwarded from Himanshi Singh lets learn
◀Which of the following are covered by a single membrane?
Anonymous Quiz
15%
(a) Mitochondria
40%
(b) Vacuole
34%
c) Lysosome
11%
d) Plastid
Forwarded from Himanshi Singh lets learn
↘Living cells were discovered by
Anonymous Quiz
40%
(a) Robert Hooke
8%
(b) Purkinje
42%
(c) Leeuwenhoek
9%
(d) Robert Brown
Forwarded from Himanshi Singh lets learn
↗The activity of an enzyme becomes ineffective
Anonymous Quiz
25%
(a) at low temperature
24%
(b) at atmospheric pressure
41%
(c) at high temperature
9%
(d) in aqueous medium
Forwarded from Himanshi Singh lets learn
☑Volume of one mole of any gas at NTP is
Anonymous Quiz
12%
(a) 11.2 litre
68%
(b) 22.4 litre
14%
(c) 10.2 litre
6%
d) 22.8 litre
Forwarded from Himanshi Singh lets learn
🔻Which of the following will not form a colloidal system?
Anonymous Quiz
14%
(a) Solid-gas
23%
(b) Liquid-gas
55%
(c) Gas-gas
8%
d) Gas-liquid
Forwarded from Himanshi Singh lets learn
↘Which of the following types of metals make the most efficient catalyst?
Anonymous Quiz
18%
(a) Alkali metals
46%
(b) Transition metals
24%
c) Inner transition metals
12%
(d) Alkaline earth metals
Forwarded from Himanshi Singh lets learn
↘Tyndall effect confirms the
Anonymous Quiz
10%
(a) gravity effect on the sol. particles
58%
(b) light scattering by the sol. particles
20%
c) heterogeneous nature of sols.
12%
d) Brownian motion of the sol. particles
Forwarded from Himanshi Singh lets learn
⤴Shape selective catalysis is a reaction catalysed by
Anonymous Quiz
32%
(a) zeolite
31%
b) enzymes
19%
(c) platinum
18%
(d) Ziegler-Natta catalyst
Forwarded from Himanshi Singh lets learn
🔹Fe3O4 (magnetite) is an example of
Anonymous Quiz
18%
(a) normal spinel structure
39%
(b) inverse spinel structure
28%
c) fluoride structure
15%
d) anti fluorite structure
Forwarded from Himanshi Singh lets learn
↘Catenation property is maximum in
Anonymous Quiz
18%
(a) phosphorus
25%
(b) sulphur
54%
(c) carbon
3%
(d) No one
Forwarded from Himanshi Singh lets learn
❇Element found from sea water is
Anonymous Quiz
12%
(a) magnesium
38%
(b) Sodium
47%
(c) Iodine
3%
d) None of these
Forwarded from Himanshi Singh lets learn
↘Which one of the following does not form hydrogen bonding?
Anonymous Quiz
32%
A. HCl
18%
B. H2O
28%
C. HF
22%
D. No one
Forwarded from Himanshi Singh lets learn
↘Identify a member of porifera
Anonymous Quiz
58%
a) Spongilla
18%
(b) Euglena
13%
c) Penicillium
10%
(d) Hydra
Forwarded from Himanshi Singh lets learn
↘5-Kingdom classification has given by
Anonymous Quiz
8%
(a) Morgan
79%
(b) R. Whittaker
11%
(c) Linnaeus
2%
(d) Haeckel
Forwarded from Himanshi Singh lets learn
↗Which one of the following is the strongest lewis acid?
Anonymous Quiz
45%
(a) BF3
31%
(b) BCl3
12%
(c) BBr3
12%
(d) Bl3