CSS Everyday Science Mock Test 19

A distillate of peat tar is called __________?

1 Mark(s)

Your Answer:

Algae Algae
Peat mosses Peat mosses
Sphagnol Sphagnol
Swamp Swamp

Solanaceae have following stamens __________?

1 Mark(s)

Your Answer:

2 2
3 3
4 4
5 5

Silver nitrate is also known as____________?

1 Mark(s)

Your Answer:

Blue Stone Blue Stone
Blue Vitriol Blue Vitriol
Lunar Caustic Lunar Caustic
Both A & B Both A & B

Carbon is an integral part of an ecosystem. It is cycled throughout the ecosystem as it is used and then reused. It is necessary for all life to exist. Name the process in which plants uses carbon dioxide?

1 Mark(s)

Your Answer:

Respiration Respiration
Decomposition Decomposition
Photosynthesis Photosynthesis
Fermentation Fermentation

Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that

1 Mark(s)

Your Answer:

A) solid X is sodium hydroxide and the gas Y is CO 2
B) solid X is sodium bicarbonate and the gas Y is CO 2
C) solid X is sodium acetate and the gas Y is CO 2
D) solid X is sodium bicarbonate and the gas Y is SO 2 .

The gradual changes in organism is___________?

1 Mark(s)

Your Answer:

obsorbtion obsorbtion
digestion digestion
evolution evolution
ingestion ingestion

Bioaccumulation refers to:

1 Mark(s)

Your Answer:

Increasing toxin concentration up food chains
Decreasing toxins Decreasing toxins
Energy flow Energy flow
Nutrient cycling Nutrient cycling

An auto-immune disease is

1 Mark(s)

Your Answer:

A) SCID A) SCID
B) rheumatoid arthritis B) rheumatoid arthritis
C) myasthenia gravis C) myasthenia gravis
D) both D) both

The resonance energy of benzene is__________________?

1 Mark(s)

Your Answer:

150.5 kJ/mol 150.5 kJ/mol
250.5 kJ/mol 250.5 kJ/mol
150.5 Cal/mol 150.5 Cal/mol
250.5 Cal/mol 250.5 Cal/mol

Actinoids are:

1 Mark(s)

Your Answer:

Radioactive, 5f series Radioactive, 5f series
Non-radioactive Non-radioactive
6d series 6d series
4f series 4f series

In mesophyll cells chloroplast present in following cells _________?

1 Mark(s)

Your Answer:

Palisade Palisade
Spongy parenchyma Spongy parenchyma
Stem Stem
Roots Roots

Which of the following shows inert pair effect ?

1 Mark(s)

Your Answer:

boron boron
carbon carbon
silicon silicon
tin tin

Bacterial DNA transfer from one bacterium to another by virus___________?

1 Mark(s)

Your Answer:

conjugation conjugation
transduction transduction
transformation transformation
combination combination

The formula C6H5-CO-CH3 represents_______ ?

1 Mark(s)

Your Answer:

Acetone Acetone
Acetic acid Acetic acid
Acetophenone Acetophenone
Phenyl acetate Phenyl acetate

Paramagnetic species has:

1 Mark(s)

Your Answer:

Paired electrons Paired electrons
Unpaired electrons Unpaired electrons
No electrons No electrons
Only bonding electrons Only bonding electrons

Progesterone pill helps in preventing pregnancy by not allowing

1 Mark(s)

Your Answer:

A) ova formation A) ova formation
B) fertilisation B) fertilisation
C) implantation C) implantation
D) none of these. D) none of these.

Which of the following measurements is the most precise?

1 Mark(s)

Your Answer:

5.00 mm 5.00 mm
5.00 cm 5.00 cm
5.00 m 5.00 m
5.00 km 5.00 km

Which of the following microspore characteristics __________?

1 Mark(s)

Your Answer:

Unicellular Unicellular
Multicellular Multicellular
Polycellular Polycellular
None None

Which algae is common in cooler marine_________?

1 Mark(s)

Your Answer:

kelps kelps
plantae plantae
yellowish algae yellowish algae
red algae red algae

Relation between phase difference ($\phi$) and path difference ($\Delta x$) is:

1 Mark(s)

Your Answer:

$\phi = \frac{2\pi}{\lambda} \Delta x$ $\phi = \frac{2\pi}{\lambda} \Delta x$
$\phi = \frac{\lambda}{2\pi} \Delta x$ $\phi = \frac{\lambda}{2\pi} \Delta x$
$\phi = \pi \Delta x$ $\phi = \pi \Delta x$
$\phi = \lambda \Delta x$ $\phi = \lambda \Delta x$

An ionic compound is melted and tested for conductivity. The bulb glows. What does this indicate?

1 Mark(s)

Your Answer:

A) Presence of free electrons A) Presence of free electrons
B) Presence of free ions B) Presence of free ions
C) Absence of bonding C) Absence of bonding
D) Weak forces D) Weak forces

The nutritive cells found in seminiferous tubules are

1 Mark(s)

Your Answer:

A) Leydig’s cells A) Leydig’s cells
B) atretic follicular cells B) atretic follicular cells
C) Sertoli cells C) Sertoli cells
D) chromaffin cells. D) chromaffin cells.

The waves that have maximum penetrating power to treat tumors are ______?

1 Mark(s)

Your Answer:

Ultraviolet radiation Ultraviolet radiation
Microwaves Microwaves
Gamma-rays Gamma-rays
Radio waves Radio waves

The genotypic ratio of incomplete dominance in Mirabilis jalapa is:

1 Mark(s)

Your Answer:

0.12569444444444 0.12569444444444
9:3:3:1 9:3:3:1
0.042361111111111 0.042361111111111
0.04306712962963 0.04306712962963

The amount of heat required to raise the temperature of 1g of a substance by $1^\circ C$ is called:

1 Mark(s)

Your Answer:

Specific Heat Specific Heat
Latent Heat Latent Heat
Heat Capacity Heat Capacity
Thermal Conductivity Thermal Conductivity

If fo is the focal length of the objective and fe is the focal length of the eyepiece, then magnification of a refracting (M) telescope can be determined as:

1 Mark(s)

Your Answer:

M = fo/fe M = fo/fe
M = fo + fe M = fo + fe
M = fo - fe M = fo - fe
M = fe/fo M = fe/fo

TMV enters in plants___________?

1 Mark(s)

Your Answer:

electrically electrically
mechanically mechanically
chemically chemically
physically physically

The human genome project was published in:

1 Mark(s)

Your Answer:

1999 1999
2008 2008
2005 2005
2002 2002

Grasshopper is an example of which type of sex determination?

1 Mark(s)

Your Answer:

XO type XO type
XY type XY type
ZW type ZW type
Haplo-diploid Haplo-diploid

Eutrophication is:

1 Mark(s)

Your Answer:

Water scarcity Water scarcity
Air pollution Air pollution
Nutrient enrichment Nutrient enrichment
Soil erosion Soil erosion

An electrical switch that opens and closes under the control of another electrical circuit is called:

1 Mark(s)

Your Answer:

fuse fuse
relay relay
breaker breaker
transformer transformer

To measure the speed of an approaching car a police officer shines?

1 Mark(s)

Your Answer:

light waves on it light waves on it
microwaves on it microwaves on it
radio waves on it radio waves on it
ultra high frequency waves on it ultra high frequency waves on it

Which vitamin is primarily produced in the skin in response to sunlight?

1 Mark(s)

Your Answer:

Vitamin A Vitamin A
Vitamin C Vitamin C
Vitamin D Vitamin D
Vitamin K Vitamin K

The process of coming the male gametes or sperm with female gametes___________?

1 Mark(s)

Your Answer:

fertilization fertilization
budding budding
conjugation conjugation
reproduction reproduction

The property of a substance which offers opposition to flow of current is called:

1 Mark(s)

Your Answer:

friction friction
resistance resistance
current current
Electromotive force (Electromotive force (EMF))

Sound of frequency below 20 Hz is:___________?

1 Mark(s)

Your Answer:

Audiosonic Audiosonic
Infrasonic Infrasonic
Ultrasonic Ultrasonic
Supersonic Supersonic

Two tuning forks of frequencies 256 Hz and 258 Hz are sounded together. The time interval between consecutive maxima (beats) is:

1 Mark(s)

Your Answer:

1 s 1 s
0.5 s 0.5 s
0.2 s 0.2 s
2 s 2 s

The rays that have negative charge are ___________?

1 Mark(s)

Your Answer:

Anode Rays Anode Rays
Cathode Rays Cathode Rays
Canal Rays Canal Rays
Gamma Rays Gamma Rays

DNA stands for:

1 Mark(s)

Your Answer:

Deoxyribose acid Deoxyribose acid
Deoxyribonucleic acid Deoxyribonucleic acid
Diribonucleic acid Diribonucleic acid
Deoxyribosome acid Deoxyribosome acid

If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along_____________?

1 Mark(s)

Your Answer:

West West
North North
Down Down
Up Up

Carbohydrates which form 2 to 9 molecules of simple sugars upon hydrolysis are called:

1 Mark(s)

Your Answer:

monosaccharides monosaccharides
oligosaccharides oligosaccharides
polysaccharides polysaccharides
starch starch

Convex lenses are also known as ____?

1 Mark(s)

Your Answer:

Converging lenses Converging lenses
Diverging lenses Diverging lenses
Deflecting lenses Deflecting lenses
Reflecting lenses Reflecting lenses

The normal WBC count per mm³ of blood is:

1 Mark(s)

Your Answer:

4,000-11,000 4,000-11,000
40,000-1,10,000 40,000-1,10,000
400-1,100 400-1,100
40-110 40-110

When waves moving in one medium fall on the surface of another medium they bounce back into the first medium such that the angle of incidence is equal to the angle of reflection. This phenomenon is known as:

1 Mark(s)

Your Answer:

refraction of waves refraction of waves
diffraction of waves diffraction of waves
reflection of waves reflection of waves
deflection of waves deflection of waves

Second growth phase occurred in___________?

1 Mark(s)

Your Answer:

G1 G1
G2 G2
S S
0 0

Potential of SHE is considered as__________________?

1 Mark(s)

Your Answer:

zero zero
unity unity
constant constant
multiple of 1 multiple of 1

In solvent extraction ether is used to separate products of organic synthesis from________________?

1 Mark(s)

Your Answer:

water water
iodine iodine
hydrochloric acid hydrochloric acid
gases gases

Conversion of reactant into product in unit time is called________________?

1 Mark(s)

Your Answer:

rate of forward reaction rate of forward reaction
rate of backward reaction rate of backward reaction
rate constant rate constant
rate co-efficient rate co-efficient

Arrange S, O and Se in ascending order of electron affinity

1 Mark(s)

Your Answer:

A) Se < S < O A) Se < S < O
B) Se < O < S B) Se < O < S
C) S < O < Se C) S < O < Se
D) S < Se < O D) S < Se < O

Energy released or absorbed when electrons are added in atom is_________________?

1 Mark(s)

Your Answer:

Ionization potential Ionization potential
Electronegativity Electronegativity
Electron affinity Electron affinity
Activation energy Activation energy

The circuit that provides only one path for the current is called?

1 Mark(s)

Your Answer:

Series Circuit Series Circuit
Parallel Circuit Parallel Circuit
Short Circuit Short Circuit
Open Circuit Open Circuit

Splicing represents the dominance of:

1 Mark(s)

Your Answer:

DNA world DNA world
RNA world RNA world
Protein world Protein world
Lipid world Lipid world

The color of the earth wire is:

1 Mark(s)

Your Answer:

red or brown red or brown
green or yellow green or yellow
black or blue black or blue
white or pink white or pink

Solids, liquids and gases mix together to form?

1 Mark(s)

Your Answer:

Mixture Mixture
Compound Compound
Element Element
Solution Solution

When a bulb is lit, the energy is taken from the current and is transformed into:

1 Mark(s)

Your Answer:

heat energy only heat energy only
light energy only light energy only
mechanical energy mechanical energy
heat and light energy heat and light energy

A sphere of radius $R$ and mass $M$ is attached to the lower end of a steel wire of length $L$ and radius $r$. The wire is suspended from a ceiling. When the sphere is made to swing as a simple pendulum, the maximum elongation of the wire in the lowest position is:

1 Mark(s)

Your Answer:

$\frac{MgL}{\pi r^2 Y}$ $\frac{MgL}{\pi r^2 Y}$
$\frac{2MgL}{\pi r^2 Y}$ $\frac{2MgL}{\pi r^2 Y}$
$\frac{MgL}{2\pi r^2 Y}$ $\frac{MgL}{2\pi r^2 Y}$
Cannot determine without velocity Cannot determine without velocity

Plants prepare their food in the presence of?

1 Mark(s)

Your Answer:

Hydrogen Hydrogen
Sunlight Sunlight
Nitrogen Nitrogen
Both A and C Both A and C

Evaluating Your Answers

CSS Everyday Science Mock Test 19 : Question 1 of 57