General Science

In dry regions, the leaf size of a tree becomes smaller. It is so to

  1. maintain natural growth
  2. protect plant from animals
  3. reduce metabolism
  4. reduce transpiration

Which of the following statements about sexual reproduction in flowering plants are correct?

  1. Stamen is present in the centre of a flower.
  2. Stamen produces pollen grains in the ovary.
  3. The swollen bottom part of carpel is the ovary.
  4. The fusion of germ cells gives rise to zygote.

Select the correct answer using the code given below

  1. 2 and 4 only
  2. 1 and 3 only
  3. 2, 3 and 4 only
  4. 1, 2, 3 and 4

Which of the following are found in both plant and animal cells?

  1. Cell membrane, Chloroplast, Vacuole
  2. Cell wall, Nucleus, Vacuole
  3. Cell membrane, Cytoplasm, Nucleus
  4. Cell wall, Chloroplast, Cytoplasm

Which one of the following diseases in humans can spread through air?

  1. Goitre
  2. HIV-AIDS
  3. Tuberculosis
  4. Dengue

Sickle-cell anaemia is a disease caused due to the abnormality in?

  1. blood plasma composition
  2. red blood cells
  3. white blood cells
  4. thrombocytes

Dual-energy X-ray absorptiometry (DEXA) is used to measure

  1. spread of solid tumour
  2. bone density
  3. extent of brain haemorrhage
  4. ulcerous growth in blood

The gastrointestinal hormones namely secretin and cholecystokinin secreted by duodenal epithelium activate respectively which organs to discharge their secretions?

  1. stomach and small intestine
  2. gall bladder and stomach
  3. pancreas and gall bladder
  4. pancreas and stomach

Which of the statements given below are correct?

  1. A person having blood group 'A' can donate blood to persons having blood group 'A' and blood group 'AB'.
  2. A person having blood group 'AB' can donate blood to persons having blood groups 'A', 'B', 'AB' or 'O'.
  3. A person with blood group 'O' can donate blood to persons having any blood group.
  4. A person with blood group 'O' can receive blood from the person of any of the blood groups.

Select the correct answer using the code given below:

  1. 1 and 3 only
  2. 3 and 4 only
  3. 1 and 2 only
  4. 1, 2, 3 and 4

Electricity is produced through dry cell from

  1. Nuclear Energy
  2. Mechanical Energy
  3. Chemical Energy
  4. Thermal Energy

When you pull out the plug connected to an electrical appliance, you often observe a spark. To which property of the appliance is this related?

  1. Resistance
  2. Wattage
  3. Capacitance
  4. Inductance

If two conducting spheres are separately charged and then brought in contact

  1. the total charge of the two spheres is conserved
  2. both the total energy and the total charge are conserved
  3. the final potential is always the mean of the original potential of the two spheres
  4. the total energy of the two spheres is conserved

A person standing in front of a plane mirror approaches the mirror by 40 cm. The new distance between the person and his image in the plane mirror is

  1. 60 cm
  2. 1.4 m
  3. 1.2 m
  4. 2.0 m

A nauticle mile is equal to

  1. 5060 feet
  2. 5280 feet
  3. 6060 feet
  4. 6080 feet

What is the main constituent of a Pearl?

  1. Calcium carbonate and magnesium carbonate
  2. Calcium carbonate only
  3. Calcium sulphate only
  4. Calcium oxide and calcium sulphate

When carbon dioxide is passed through lime water, the solution turns milky, but, on prolonged passage, the solution turns clear. This is because

  1. the calcium carbonate formed initially is converted to soluble calcium bicarbonate on passage of more carbon dioxide
  2. the calcium bicarbonate formed initially is converted to soluble calcium carbonate on passage of more carbon dioxide
  3. the reaction is reversible and lime water is regenerated
  4. the initially formed insoluble compound is soluble in carbonic acid

Dihydrogen can be prepared on a commercial scale by the action of steam on hydrocarbons, when a mixture of CO and H2 gas is formed. It is known as

  1. industrial gas
  2. producer gas
  3. fuel gas
  4. water gas

Which of the following acids is a mineral acid

  1. Citric acid
  2. Ascorbic acid
  3. Tartaric acid
  4. Hydrochloric acid

In the reaction ZnO + C → Zn + CO, 'C' acts as

  1. an acid
  2. a base
  3. an oxidising agent
  4. a reducing agent

The distribution of electrons into different orbits of an atom, as suggested by Bohr, is

  1. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 32 electrons in the M-orbit
  2. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 16 electrons in the M-orbit
  3. 2 electron in the K-orbit, 6 electrons in the L-orbit, 18 electrons in the M-orbit
  4. 2 electrons in the K-orbit, 8 electrons in the L-orbit, 18 electrons in the M-orbit

Which one of the following is the correct electronic configuration of chlorine

  1. 7, 8, 2
  2. 2, 8, 7
  3. 2, 8, 8
  4. 2, 7, 8

Which one of the following is an example of chemical change?

  1. Burning of paper
  2. Magnetization of soft iron
  3. dissolution of cane sugar in water
  4. Preparation of ice cubes from water

Plants contain a variety of sterols like stigmasterol, ergosterol, sitosterol etc., Which very closely resemble cholesterol. These plant sterols are referred as:

  1. Phytosterols
  2. Calciferols
  3. Ergocalciferols
  4. Lumisterols

In artificial insemination (AI) process, which of the following is/are introduced into the uterus of the female?

  1. Egg only
  2. Fertilized egg
  3. Sperm only
  4. Egg and sperm

Which one of the following vitamins has a role in blood clotting?

  1. Vitamin A
  2. Vitamin B
  3. Vitamin D
  4. Vitamin K

Glucose is a source of energy. Which one of the following types of molecule is Glucose?

  1. Carbohydrate
  2. Protein
  3. Fat
  4. Nucleic acid

The living content of cell is called protoplasm. It is composed of:

  1. Cytoplasm only
  2. Cytoplasm and nucleoplasm
  3. Nucleoplasm only
  4. Cytoplasm, nucleoplasm and other organelles

Which one of the following pairs of vitamin and diseases is/are correctly matched?

  1. Vitamin A : Rickets
  2. Vitamin B1 : Beriberi
  3. Vitamin C : Scurvy

Select the correct answer using the code given below:

  1. 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

A myopic person has a power of -1.25 Dioptre. What is the focal length and nature of his lens?

  1. 50 cm and convex lens
  2. 80 cm and convex lens
  3. 50 cm and concave lens
  4. 80 cm and concave lens

A piece of ice, 100 g in mass is kept at 0°C. The amount of heat it requires to melt at 0°C is (take latent heat of melting of ice to be 333.6 J/g):

  1. 750.6 J
  2. 83.4 J
  3. 33360 J
  4. 3.336 J

A person rings a metallic bell near a strong concrete wall. He hears the echo after 0.3 s. If the sound moves with a speed of 340 m/s, how far is the wall from him?

  1. 102 m
  2. 11 m
  3. 51 m
  4. 30 m

The SI unit of mechanical power is:

  1. Joule
  2. Watt
  3. Newton-second
  4. Joule-second

Two system are said to be in thermal equilibrium if and only if:

  1. there can be a heat flow between them even are at different temperatures
  2. there cannot be a heat flow between them even if they are at different temperatures
  3. there is no heat flow between them
  4. their temperature are slightly different

The mass number of an atom is determined by

  1. the number of protons only
  2. adding the number of neutrons and number of electrons
  3. adding the number of protons and number of electrons
  4. adding the number of neutrons and number of protons

Which of the following pairs represents isoelectronic ions

  1. Mg2+, Ca2+
  2. Na+, K+
  3. K+, Mg2+
  4. Ca2+, S2-

Which one among the following contains the most neutrons?

  1. 6129Cu
  2. 5926Fe
  3. 6030Zn2+
  4. 6130Zn

Two atoms are said to be isotopes if

  1. they have the same atomic number but different mass numbers
  2. the sum of the number of protons and neutrons is the same, but the number of protons is different
  3. they have the same number of neutrons but different modes of radioactive decay
  4. they have the same number of neutrons but different mass numbers

The number of aluminium ions present in 54 g of aluminium (atomic weight 27) is

  1. 2
  2. 18
  3. 1.2 x 1024
  4. 1.1 x 1024

Which one of the following is the correct electronic configuration of chlorine

  1. 2, 8, 8
  2. 2, 7, 8
  3. 7, 8, 2
  4. 2, 8, 7

The most of the mass of the atom can be found in

  1. nucleus
  2. electron cloud
  3. charges
  4. electrons

The number of valence electrons in the O2- ion is

  1. 4
  2. 6
  3. 8
  4. 10